The most rigid shape that you can make out of straight pieces is the triangle.
A rigid shape is when you cant push/pull on it and make it turn into a different shape. You can make shapes rigid by adding "braces", which are lines that you put inside the shape to make triangles (which are rigid). For instance, a square is notrigid. To make it rigid, you would put a brace inside diagonally. This would create TWO triangles, and therefore, rigid. ~xDragonx
A triangle
triangle
a pentagon.
The most rigid shape that you can make out of straight pieces is the triangle.
A rigid shape is when you cant push/pull on it and make it turn into a different shape. You can make shapes rigid by adding "braces", which are lines that you put inside the shape to make triangles (which are rigid). For instance, a square is notrigid. To make it rigid, you would put a brace inside diagonally. This would create TWO triangles, and therefore, rigid. ~xDragonx
triangleANS 2 - There is no 'best shape' - each bridge is designed for a particular place and can be almost any kind of construction.
A diamond is not a rigid shape unless it has a brace. A brace is a diagonal line you put inside shapes to make them rigid. Triangles are rigid so if you put a brace in a square to make two triangles the square is now rigid.
A triangle
triangle
A trapezoid and a triangle can make a triangle or another trapezoid, among others.
Any shape that is enclosed and has three sides is a triangle.
The triangle is the strongest geometric shape, as it holds its shape and has a base which is very strong. The triangle is common in all sorts of building supports and trusses. If all three sides of a triangle are made of rigid material, the angles are fixed and cannot get larger or smaller without breaking at the joints, unlike a rectangle, for example, which can turn into a parallelogram and even collapse totally. If you take a rectangle and place one diagonal piece from corner to corner, you can make that strong and stable, too, but doing that makes two triangles.
a pentagon
a pentagon.
Octagon