| Construction Algorithm | ||
| 1 |  |
Construct a point M as a center of the rectangle. |
| 2 | |
Construct a point A on the construction area next to the point M. |
| 3 |  |
Construct the line that connects the two points A and M. |
| 4 |  |
Construct a circle centered at M and has a radius AM. |
| 5 | |
Generate the intersection point between the line AM and the circle at C. |
| 6 |  |
Construct a free line through the point M. |
| 7 | |
Generate the intersection points between the free line and the circle at B and D. |
| 8 |  |
Join up the four points A, B, C, and D to get the required rectangle. |
| 9 |  |
Switch to Move Mode. Pick a free element. Move it around to check your construction. |
| Construction Theorems | ||
| A rectangle is a
parellelogram with two equal diagonals. A parallelogram is a quadrilateral, in which diagonals bisect each other. |
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