None because a tetrahedron is a triangular based pyramid with 4 faces, 6 edges and 4 vertices
Four. The prefix "tetra" means four.
there are 24 right angles in all faces of a cube
A rectangular prism has six faces; each face has four right angles. There are 24 right angles in all.
A cuboid has 6 faces, each of which is a rectangle. A rectangle has 4 right angles. Therefore, each face of the cuboid has 4 right angles. To find the total number of right angles in all the faces of the cuboid, you would multiply the number of right angles per face (4) by the number of faces (6), resulting in a total of 24 right angles in all the faces of a cuboid.
A triangular block prism has four right angles on each of the three faces, so the total 'on all the faces' = 12.
A hexagon has only one face and this can have up to 5 right angles.
24.
A pyramid has 6 angles, 8 faces, and 6 edges. Is that right?
4
A cube has 6 faces, each having 4 right angles, for a total of 24 angles.
There are none because a square is made out of right angles, and a cube's faces are made out of squares.