﻿ Definition and examples of pyramid | define pyramid - geometry - Free Math Dictionary Online

# Pyramid

## Definition of Pyramid

A pyramid is a polyhedron with a polygonal base and triangles for sides.

### Example of Pyramid

A pyramid is named for the shape of its base.
Some of the polygonal pyramids are shown below.

A. 8
B. 5
C. 4
D. 9

### Solution:

Step 1: The base decides the shape of the Pyramid.
Step 2: The base of the Pyramid is a rectangle.
Step 3: There are 4 base edges in the Pyramid.
Step 4: The faces of the Pyramid joining the base edge to the vertex are the triangular faces of the Pyramid.
Step 5: So, the number of triangular faces is equal to the number of base edges of the Pyramid.
Step 6: So, there are 4 triangular faces in a rectangular Pyramid.

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