Why are triangles such a strong shape to build with?
In: Engineering
if you have another shape like say a square you can squish it without changing the lengths of the sides, only by pivoting the corners. but a triangle is fixed, you cant deform it without changing the length of its sides. most materials are strongest under compression or tension with the weak points being the corners of the shape bending. if the corners cant bend without the sides changing length then you get all the strength of the material whilst minimising its weaknesses.
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