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# Why is the triangle the strongest shape?

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The triangle is the strongest shape due to the rigidity of its sides, which allows them to transfer force more evenly through their sides than other shapes. Triangles are used extensively in the construction of buildings and bridges.

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Squares are quite strong, but they collapse if sufficient weight is applied to any of their sides. These sides can be strengthened to resist collapsing by reinforcing them with additional braces. However, these braces will effectively create multiple triangles. Triangles are often stacked together, facing opposite directions, in order to span larger distances. Examples of this can be seen in bridges or large buildings like the Eiffel Tower.

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## Related Questions

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The perimeter of a triangle is the sum of all the sides of the triangle, and you determine the perimeter of any triangle by adding the lengths of all three sides. Since an isosceles triangle has two sides of equal length, start by multiplying the length of one of the equal sides by two. Then, add the product to the length of the base side. The resulting sum is the perimeter of the triangle. Using either a pen and paper or a calculator, you can make these simple calculations in just a few minutes.

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Although, in general, triangles do not have special names for their sides, in right triangles, the sides are called the hypotenuse, the opposite side and the adjacent side. The names change depending on which angle is the focus angle.

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The perimeter of a kite is the total distance around the outside of its shape, which means the length of all four of its sides added together. Since a kite has two pairs of matching sides, the standard formula is that the perimeter equals "2a" plus "2b."