Mathematics, 16.01.2021 02:00, Janae2918

A wooden frame has screws at A, B, C, and D so that the sides of it can be pressed to change the angles occurring at each vertex. AB = CD and AB || CD, even when the angles change. Why is the frame always a
parallelogram?

Answers: 2

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A wooden frame has screws at A, B, C, and D so that the sides of it can be pressed to change the angles occurring at each vertex. AB = CD and AB || CD, even when the angles change. Why is the frame always a parallelogram?

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A wooden frame has screws at A, B, C, and D so that the sides of it can be pressed to change the angles occurring at each vertex. AB = CD and AB || CD, even when the angles change. Why is the frame always a
parallelogram?