A triangle has three faces. In geometry, a face refers to a flat surface of a solid shape. Since a triangle is a two-dimensional shape with three sides, it has three faces. Each side of the triangle forms one of its three faces.
With a triangle base there are four sides including the base
pentagonal square
An octohedron, or diamond
a triangular pyramid has 4 triangular sides
Oh, isn't that a lovely question! Shapes with an odd number of faces can be quite special. One shape that fits this description is a pyramid. It has a triangular base and three faces meeting at a single point, creating a total of four faces.
four triangle faces.
There are 2 triangle base faces, and 3 rectangle faces. 5 total faces.
5 faces
1
5
7.5
1
3
trianle have no faces, because it is 2D figure.
One
None.
four