A 3D shape that has 6 edges is called a hexagonal prism.
corners of a 3d shape
you work out the number of right angles on each face of the shape. when ur done then add up all the number of right angles form each face
A cube has 6 faces, each having 4 right angles, for a total of 24 angles.
A pentagonal prism has 15 edges
A regular tetrahedron (an equilateral triangular pyramid).