stability and strength

11

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this is a topic from year 5 science curriculum.

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Page 1: Stability and Strength
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什么形状是最稳固的?

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Why?

1.      Because the triangle does not easily deform and is able to balance the stretching and compressive forces inside the structure.2.      For economic reasons: since the triangle obviously has only 3 sides, it requires little material to make a support, thus minimizing the costs.Overall, a triangle is the simplest geometric figure that will not change shape when the lengths of the sides are fixed. 

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