stability and strength
Post on 27-Jan-2016
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DESCRIPTION
this is a topic from year 5 science curriculum.
TRANSCRIPT
什么形状是最稳固的？
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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