One shape is a favorite among architects, the triangle. The triangle is the strongest shape, capable of holding its shape, having a strong base, and providing immense support.  Some of the world’s most famous architectural marvels like the Eiffel Tower, Great Pyramids of Giza, and the Louvre Pyramid use the support of triangles to make beautiful, durable structures. Two of the most used triangles in architecture are the 30⁰-60⁰-90⁰ triangle, and the 45⁰-45⁰-90⁰ triangle.

There are a few types of triangle: the equilateral triangle which has 3 sides of equal length, an isosceles triangle with two equal sides, and a scalene triangle which has no sides of equal length. Aside from all the differences in triangles, they have some similarities, they all have three sides and are extremely stable. Comparing how other shapes stand up to pressure proves the triangles resilience. If pressure is applied to one side of a square, it will eventually shift into a rhombus. No matter the amount of pressure applied to a triangle, it will absorb the pressure and remain rigid. A polygon is a shape made from straight lines, and the triangle is the only polygon that will not shift under pressure.

Due to triangles ability to withstand tremendous pressure, this shape is often found in architecture to provide stability. Geometry and architecture are linked fundamentally, and by understanding the form of the triangle, architects provide the support they need to a developing structure. A-frame homes, truss bridges, and geodesic domes rely on triangles to create a durable structure.

The smallest polygon is the strongest polygon, and the number of structures relying on the strength of the triangle prove that. As an amateur architect, you can create vast structures using triangles. Triangular support beams can be found in large sporting arenas, bridges, and your home’s foundation! Triangles are one amazing shape!

You can test the strength of a triangle today by building your own truss bridge! https://sciencemadefun.net/downloads/Truss%20Bridge_EOTD_May%205th.pdf