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A square pyramid has five vertices whereas a triangular pyramid (tetrahedron) has four.

A tetrahedron does not normally have any verticals but it can have three [mutually] vertical edges at one vertex, or two sets of mutually perpendicular edges at two vertices.

Either no verticals or two verticals and two horizontals.

Verticals are corners so in a two dimensional a square has 4 verticals

3 angles 3 verticals

A decagon need not have any verticals.

verticals ----- 2 vericies ----- 4 hope this helps :) x

12

It does not!

4

A tetrahedron has 4 vertices.

A tetrahedron has 4 faces.

A tetrahedron has four faces.

A tetrahedron has four vertices.

A tetrahedron has 4 faces.

A Tetrahedron has 4 vertices

A tetrahedron has 6 edges.

There are 4 vertices does the tetrahedron have

5

4

It has 0.

There need not be any.

A tetrahedron has 4 vertices - not vertexes!

One: a tetrahedron is a single solid.

A tetrahedron has four faces.