A triangular pyramid is a four sided 3D shape. All four sides are triangles. It resembles a 'traditional' pyramid, like the ones in Egypt.
A triangular prism is a five sided 3D shape. It consists of two identical triangular sides connected by three identical rectangular sides. think of it as a cylinder with triangles on the ends and three sides instead of a smooth surface.
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square pyramid
A triangular prism.
Rectangular prism = 6Triangular prism = 5 Triangular pyramid = 4 Rectangular prism: it is still 6 Rectangular pyramid = 5.
A prism has 2 bases and a pyramid has 5 faces
A triangular pyramid.