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A triangular pyramid has three lateral faces and a triangular base. The construction of a pyramid requires a polygonal base with triangular lateral faces that meet at a common vertex. More »
A triangular pyramid has four vertices and six edges. It is comprised of four equilateral triangles, with any one triangle being used as the base and the others connecting at the vertices to form a pyramid. More »
A triangular pyramid has six edges. The base of the pyramid is a triangle and the three sides are also triangles. Another name for a triangular pyramid is a tetrahedron. More »
A triangular pyramid is a pyramid that has a triangular base. In total it consists of four faces, all of which are triangles. While all the side triangles must be of the same size, the base may or may be the same size as... More »
A pyramid refers to a polyhedron created by joining a polygonal base to triangular lateral faces. There are several types of pyramids, and each is named after the shape of its base. For example, a square pyramid has a sq... More »
A rectangular pyramid is a pyramid that has a rectangle as the base and the rest of the faces are composed of triangles. A pyramid is named based on the shape of the base of the pyramid. More »
A pentagonal prism has five lateral faces and two pentagonal bases, which equal seven faces. A prism has two congruent polygons that form the top and bottom of the shape. These polygons are referred to as bases. The rema... More »

Amazon Prime Benefits
Free 2day shipping, streamingvideo, music, photo storage & more.

Learn More About Alexa
Handsfree voice control for music,calling, smart home devices & more.

Explore Amazon Smart Home
Shop for smart home devices thatwork with Alexa. See our guide too.

Meet the Fire TV Family
See our devices for streaming yourfavorite content and live TV.