A prism is a 3D shape with a constant polygon shaped cross-section. A prism is named by the shape of its polygon cross-section. When the cross-section is a triangle, the prism is called a ...

The net is made up of two right-angled triangles and three rectangles. The dimensions of the rectangles are 3 cm by 6 cm, 4 cm by 6 cm, and 5 cm by 6 cm. There are no measurements on the 3D shape.

For example, a triangle made of paper would collapse much sooner than an arch made of steel -- an effect that was not demonstrated in this lab. The shape comparisons in this lab depend upon the ...

The two types of tiles derived from triangles look a bit like a ... Evgraf Fedorov cataloged a set of five shapes called the parallelohedra—3D forms that can be packed together without any ...