Construction Algorithm |
1 |
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Construct
a line AC as a given diagonal of the parallelogram. |
2 |
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Construct
M as a midpoint of the diagonal AC. |
3 |
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Construct
a free line through M. |
4 |
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Construct
a point B on the free line. |
5 |
|
Construct
a circle centered at M and has a circumference point B at the free line. |
6 |
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Generate the
intersection points between the circle and the free line to find the
fourth vertex D of the parallelogram. |
7 |
|
Join up the
four points A, B, C, and D to get the required parallelogram. |
8 |
|
Switch to
Move Mode. Pick a free element. Move it around to check your
construction. |
Construction Theorem
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A parallelogram is a
quadrilateral, in which diagonals bisect each other.
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