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A rectangular prism has 3 sets of 4 parallel lines and 24 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.
A triangular prism has a total of nine angles. Each of the two triangular faces has three angles, totaling six angles. The three rectangular faces each have one right angle, adding three more angles. So, the total number of angles in a triangular prism is 6 + 3 = 9 angles.
Rectangular prism has 3 more vertices than rectangular pyramid. Rectangular prism has 8 vertices. Rectangular pyramid has 5 vertices.
A pentagonal prism has 10 vertices. A rectangular prism has 8 vertices. Therefore, a pentagonal prism has 2 more vertices than a rectangular prism.