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What shapes are the faces on a triangular prism? A triangular prism consists of 3 rectangles and 2 triangles (one on each end). For comparison: a rectangular pyramid (like the Great Pyramids) have 4 triangles and 1 rectanglâ¦e (usually a square). A triangular pyramid has 4 triangles (imagine a normal pyramid, but with only three sides and the bottom is a triangle as well). 6 people found this useful.
A triangular prism has a triangle as its base, a rectangular prism has a rectangle as its base, and a cube is a rectangular prism with all its sides of equal length. A cylinder is another type of right prism which has a circle as its base.or example, when a triangular prism is unfolded into a net, we can see that it has two faces that are triangles and three faces that are rectangles. To calculate the surface area of the prism, we find the area of each triangle and each rectangle, and add them together.