
Concept explainers
To draw: A regular octagon on coordinate plane, select axes and label the coordinates in terms of single letter.

Explanation of Solution
Given information: The shape is a regular octagon.
Graph:
It is known that a regular octagon has 8 sides of equal length. To draw regular octagon ABCDEFGH on coordinate plane, place the axes as shown below. Label all the vertices of the octagon in terms of a as shown below.
Figure (1)
Interpretation: From the figure it can be observed that the origin is the intersection point of all diagonals.
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