Parallelogram

作者：KS Wong, tinhel, Trisha Sluder

1. Click on the vertices of the parallelogram to manipulate the figure. 2. Observe how the lengths of diagonals and angles changes as you manipulate the figure.

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ITA - Θεώρημα τέμνουσας-εφαπτομένης
Different types of angles
L'Hopital's Rule
Rotate Clockwise

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垂心
一般四邊形
梯形
加法
柱體

Parallelogram

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