Pyramid

Definition of Pyramid

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

Video Examples: PYRAMID MATHEMATICS: Calculating the SEKED


Example of Pyramid

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

Solved Example on Pyramid

Ques: How many triangular faces are there in a rectangular pyramid?

    Choices:
    A. 8
    B. 5
    C. 4
    D. 9
    Correct Answer: C

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.