The base of this shape is a square, which we know from its name. The other four faces are all triangles. The shapes with 8 vertices are the cube and the cuboid. The cube has 6 faces all the ...

Polygons have names that show the number of sides ... It is called an equilateral triangle. The other triangles are irregular polygons. 3D shapes have different properties to 2D shapes.

The "Mars Triangle" is an even less official shape—not technically an actual asterism—with the name merely a suggestion by ...