To find the number of planes formed by its vertices in a square pyramid.

Answer to Problem 15PSC
There are 7 planes formed by its vertices in a square pyramid.
Explanation of Solution
Given information:
A square pyramid with vertices A, B, C, D and P.
Calculation:
A plane is a flat, two dimensional surface that extends infinitely far. A square pyramid has 7 planes. It is evident from the figure that there are four side planes, one at below and two in between the square pyramid.
They are
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