| Construction Algorithm | ||
| 1 |  |
Construct a line AB as a given base of the parallelogram. |
| 2 | |
Construct a point C above the line AB and the line joining B and C. |
| 3 | |
Construct a circle centered at A and has a radius BC. |
| 4 | |
Construct another circle centered at C and has a radius AB. |
| 5 | |
Generate the intersection point between the two circles to find the vertex D of the parallelogram. |
| 6 | |
Construct the two lines CD and AD. |
| 7 | |
Join up the four points A, B, C and D to get the required parallelogram. |
| 8 | |
Switch to drag mode. Pick a free element. Move it around to check your construction. |
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A parallelogram is a quadrilateral, in which each two opposite sides are equal in length. |
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