Construct and Calculate Rectangles
Construct a Rectangle 1

1. Generate side lengths

• Click on the New Dimensions button (and wait 2 secs).

REMEMBER: You can always click on (top right) to undo your last action.

2. Make the base of your rectangle.

• Click on "Segment with given length from point" icon.

• Then click on the point A (it will glow) and In the box type the number of the base of your rectangle. Hit Enter.

3. A rectangle has a 90° angle with its base.

• Click on "Angle with given size" icon.

• Click on point B, then on point A and erase 45 and type in 90. Leave the °! Hit Enter. (If you erase the degree sign, you can get another by clicking on the arrow to the right of .

4. Draw a line through A and C.

• Click on "Line through 2 points" icon.

• Click on A and then C.

5. Now we need the point on this line that is the height of the rectangle so we draw a circle with center A and radius the height of the rectangle. The intersection between the circle and the line is the point we need.

• Click on "Circle with center and radius" icon. Click on A and then type in the value of the height of your rectangle.

Click on "Intersect two objects" icon and then click on the line and then on the circle (they will glow).

6. Now do 3-5 on the top side of your rectangle.

• Click on , then on A and then on D. Erase 45 and type in 90. Leave the °. Hit Enter.

• Click on , then on D and then on E.

• Click on , then on D and type in base number.

• Click on then on line and then on the circle.

• Click on "Segment between two points" icon. Click on A and D. Click on D and then on F. Click on F and then on B.

8. Clean up