An octahedron has eight faces, each of which is an equilateral triangle. It does not have any right angles, as the angles in an equilateral triangle are each 60 degrees. Therefore, an octahedron has zero right angles.
six
4 right angles, no other angles.
It has 6 angles, none of which are right angles.
A regular hexagon as no right angles. An irregular hexagon could have from none to as many as five right angles.
a tetrahedron has 3 Right angles
An octohedron has eight faces, all of which are triangles.
5
six
6
4 right angles, no other angles.
It has 6 angles, none of which are right angles.
0 right angles
A regular hexagon as no right angles. An irregular hexagon could have from none to as many as five right angles.
a tetrahedron has 3 Right angles
A square has 4 right angles.
4 right angles
12 right angles.