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Okay, so let's look at creating some more basic shapes now.

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We've got these still on the screen.

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You might have something on the screen from a previous chapter.

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You might not.

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It's a good time to show you how to delete an object.

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So we're going to use our Windows Select.

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We're going to go down from the right.

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And remember, all we have to do is touch these because we're going right to left.

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So that's selected all of them.

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And then we just press delete the delete key on the keyboard.

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Gone.

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Okay, so let's look at these shapes in more detail.

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Now, we've already looked at Rectangle.

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We're going to do it again.

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I want you to look at the button and you'll see it's got two blue circles on.

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Now that's kind of a hint of how it's going to what it's going to ask you for, basically.

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So with that rectangle wants to corners, you can see the blue dot are in two corners and if you just

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hover over the key over the button for a while, it will come up with an explanation.

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All these commands, you can hover over it, you get a basic explanation, and then a more detailed

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one.

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Okay, so this rectangle here, if I left click it as it kind of shows with blue dots, it's looking

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for first one corner, then another.

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And it can be it can be left to right, it can be top to bottom Anywhere you want to draw it.

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It's going to ask for two corners, opposing corners.

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Okay.

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So I'm going to I'm going to select that.

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I'm going to delete and we're going to look at it again.

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I'm going to left click this rectangle.

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Most of the time when you're creating a model file or a drawing, you do actually want to draw to a

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specific.

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And measurement.

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So in this case, in this course, we're going to be using millimeters.

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But it's exactly the same.

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If you set up in inches, you usually want to draw something.

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If it's a building you want, you've measured the walls, the rooms of a building.

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You want to draw a specific size.

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It might be a mechanical component.

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You know the sizes.

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Okay.

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Most of the time you will want to draw to scale.

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Okay, so we're going to go to the rectangle tool again, and I want you to notice next to your crosshairs,

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we have this.

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There's a piece of text which says specify first corner point or and if you can't see this, it's F12

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on the keyboard, remember?

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And then we have a box where we have two boxes with a figure in each box and one of them is highlighted

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in blue.

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Okay.

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So when you get a piece of text, it's giving you a clue as to what it's looking for, basically.

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So we've clicked on the draw rectangle and now it's looking for the first point, the first corner point

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of the rectangle.

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So where's your rectangle going to begin from?

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In this case, we're just going to click down here, okay.

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And now it's saying specify other corner points.

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So as we've seen, it's looking for the opposite corner.

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But these boxes with the numbers in these allow you to input an actual dimension.

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So let's say we wanted to create a rectangle that's 1000mm, which is a meter by 500mm.

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Okay.

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So if we wanted it a thousand this way, you'll see that the box for that dimension is the one that's

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highlighted if our other box had been highlighted.

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We would have to swap between the two and we swap between these two boxes by pressing the tab key,

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which is usually on the left of the keyboard above caps lock, and it's two opposing arrows.

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By pressing the tab key, we can change between these two boxes.

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Okay, so to draw a box, which is a 1000 by 500.

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We would go left, click for the start point, make sure this box is highlighted and type in 1000.

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Now it's important here not to press enter.

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If you press enter, you're going to end the command.

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So just press that tab key and switch to the other box and you'll see this one now is locked at 1000

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and there's a little padlock next to it.

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So now we'll put in here 500.

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And now we can.

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Press enter and we have our box, which is a thousand by 500.

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Okay, so that's how you would draw a basic rectangle to set dimensions.

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Now, this draw box here, there's all sorts of other objects.

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So maybe we wanted to draw a circle.

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We'll click on the circle and we can see from a blue dot, it's giving us a clue.

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It's going to ask us for a center point and then the radius.

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So we'll just click anywhere.

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And similar to the rectangle, we've got a box highlighted with only one dimension to go into radius.

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So we've only got one box.

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I'm going to make this 500 radius, I'm going to press enter and that's a 500 radius circle.

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Okay.

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Now, you see under some of these, we've got pull downs.

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So under circle.

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You can change how you draw that circle.

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Maybe you've got a diameter and not a radius.

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Or you can choose center circle with a center diameter.

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So as before, we just left click.

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And then this time it's going to ask for a diameter.

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So 500 diameter, and you'll see it's half the size because its diameter.

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We've got it under Rectangle.

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We've got Polygon.

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This will ask us first for a number of sides.

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Let's have six sides enter.

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Then we a bit like drawing a circle.

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We click the center of the circle.

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Now it will say inscribed or circumscribed.

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That just means Do you want the corners to be to the outside or the flats?

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The easiest way is to just show you.

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So let's say inscribed in circle.

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Okay.

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Now, we weren't going to specify a position.

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Of one of these.

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Joints like the corners, if you will.

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Okay.

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And click there if we'd have selected the other option.

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And gone circumscribed about circle.

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You'll see it's asking for the flat point, not the corner.

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So to be honest, we don't use them much.

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You use Rectangle a lot.

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We use circles a lot and we use lines all the time.

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So you might notice here with line, there's two different types of line and there's polyline.

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So we'll look at the difference between those.

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So line if we left click that you can see it's going to ask you for two points, a start point and an

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end point.

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Okay.

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And then it's going to keep going.

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And you can keep drawing lines as much as you want until you right click to end the command.

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If we then use the just left, click that line there, you'll see it's only highlighted the first part.

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Okay.

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And that's because all these are different lines, even though we drew them one after the other as part

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of one command, they are separate lines.

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Okay.

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Now I'm going to shift I'm going to draw a window to select them all and press delete.

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And I'm going to look at polyline.

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I'm going to left click that and I'm going to do the same thing.

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Start not worrying about units.

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I'm just drawing a line again, right click to end.

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And now when I select it, you'll see the whole thing is selected.

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And that is the main difference between line and polyline.

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A line will end up being lots of different lines.

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A polyline is one continuous line and there's reasons why you would use one after the other.

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To be honest, most of the time I prefer to use a polyline.

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A polyline.

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You can give things like width.

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You can do all sorts of various things with it, which we'll go into later and it's just easier to work

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with.

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It's got more intelligence, if you like, you can you can do more with it.

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Whereas a line is just single lines and if you wanted to select the whole thing.

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So for this, for instance, if this was a fence line, I could click it, The whole thing would be

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selected.

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I could get a length, I could change how it looks in one go.

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Whereas if it was various different lines, I would have to select them all individually.

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But again, it's just an overview in this lesson of how to create them, and that is the main difference

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to remember going forward.

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One is separate lines.

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The other is a continuous line.

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Okay.

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And then we have things like Ellipse, which is going to ask you for three points.

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So the center and then it's going to be like drawing a circle, but it's also going to let you make

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it into an ellipse.

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Okay.

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That again, not used very often.

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When you do need it, you need it, but it's quite a rare thing.

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So we'll get rid of that.

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The main ones are circles, rectangles, lines and polylines, and we're going to look at them in more

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detail in the next chapter.