Triangles are found in many aspects of life. Students who think that what they learn in math class are never used again are usually wrong. Triangles are found in pyramids, truss bridges, and roofs. The reason triangles are found in pyramids is because a triangle was the easiest shape to build during ancient egypt or it was made because it simply represents a burial mound.
The reason triangles are found in truss bridges is because truss bridges rely heavily on triangles. Used properly, triangles evenly distribute weight throughout the bridge. Triangles are used on the sides and sometimes even the top of the bridge. The top of a truss bridge may have an “x” design, where four triangles create enough support to bear a great deal of weight. Students can use simple wooden craft sticks to create a truss bridge strong enough for the teacher to stand on. A well-designed bridge is less about the materials and more about the design.
The reason triangles are found in a roof is because it allows the rain to easily slide into the gutter and also because it lets snow slide out. If snow piled up on a flat roof it will most definitely collapse. Many careers like NASA and engineering require mathematics. Even a simple job like a cashier requires math to calculate a simple shopping list. Even a hiker has to calculate how far they have to hike or how much water they need for the amount of time they are going hiking for or if they want to know how tall a mountain is or what angle they are climbing at they have to use math..