Parallelogram

作者：Steve Combs

What do you observe about: The opposite sides of the Parallelogram? The opposite angles of the Parallelogram? The diagonals of the Parallelogram? The consecutive angles of the Parallelogram?

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Circle Tangent to a Line and a Circle
centroid
Sum of Triangle Angles
Angle Between two Vectors
MODULE 27 CUBE 3D CONSTRUCTION ANDNET USAGE

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幾何中心或重心
Sequences and Series
表面
圓錐曲線
除法

Parallelogram

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