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# Why is the triangle the strongest shape?

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### Quick Answer

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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### Full Answer

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

• A:

Some of the most common geometric shapes are the triangle, the square, the pentagon, the octagon and the circle. All of these shapes, except the circle, are polygons, meaning they have a discrete number of sides and angles.

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The name of a polygon with three sides is called a triangle. A four-sided polygon is called a quadrilateral, a five-sided polygon is a called a pentagon and a six-sided polygon is called a hexagon.

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Three laws can be used to find the sides and angles of almost any triangle: the Law of Angles, the Law of Sines, and the Law of Cosines. The Law of Angles means that all three angles of a triangle add up to 180 degrees. The Law of Sines is that the ratio of each side to the sine of its opposite angle is equal: a/sin(A) = b/sin(B) = c/sin(C). The Law of Cosines works when all sides are known.

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A polygon with three sides is called a triangle. All triangles consist of three lines that are not collinear and three angles. Polygons can have any number of sides, but they must be closed figures.

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