| Construction Algorithm |
| 1 |
 |
Construct
a point M as a center of the parallelogram. |
| 2 |
|
Construct
a point A on the construction area that is 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 constructed circle
at C. |
| 6 |
 |
Construct a
free line through the point M. |
| 7 |
|
Add a point B
on the free line. |
| 8 |
|
Construct a
circle centered at M and has a radius BM. |
| 9 |
|
Generate the
intersection point D between the free line and the second circle. |
| 10 |
 |
Join up the
four points A, B, C, and D to get the required parallelogram. |
| 11 |
 |
Switch to
Move Mode. Pick a free element. Move it around to check your
construction. |
| Construction Theorem |
| A parallelogram is a
quadrilateral, in which diagonals bisect each other. |