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GeoGebra
Diagonals of a parallelogram
Author:
Zoltán Kovács
It is well known in elementary Euclidean geometry, that diagonals of a parallelogram bisect each other.
Observe the construction steps by moving forward in the construction protocol. Scroll down meanwhile in the Algebra View if required.
Note that definitions of points E and F differ, but they are actually the same.
Drag point C to various positions. Try to find some positions which cause E to not be equal to F.
Check whether points E and F are equal by using the Relation Tool (in the 10th toolbox). Click "More" to investigate the situation symbolically.
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testfileSun Jul 15 20:28:15 CEST 20180.7095918885362272
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