A right trapezoidal prism has 12 sides. Any prism has three times the number of sides of its cross-sectional shape. A trapezoid has four sides, so a [right] trapezoidal prism has 3 x 4 = 12 sides.
a trapezoidal prism
A rectangular prism has six faces; each face has four right angles. There are 24 right angles in all.
A triangular block prism has four right angles on each of the three faces, so the total 'on all the faces' = 12.
Rectangles have four sides and four angles.
Although there is a separate formula for it, yes, a cube is technically a rectangular prism, and you can use the rectangular prism's formula, because a rectangle is defined as a quadrilateral with four right angles, which a square is.
At least 4 - on the four corners of the base. But there could be two more if the opposite pairs of sloping edges met at the apex at right angles.
The lateral sides are usually rectangles so each would comprise four right angles. However, the bases can be any pair of congruent triangles.
A rhombus does not have four right angles. A square has four right angles, as does a rectangle.
Yes, a rectangle has four right angles.
A square has FOUR right angles. Each corner is a right angle.
A four sided figure with four equal sides and no right angles is a diamond, or a rhombus. If it had four right angles, it would be a square.