a.
To find: The interior
a.
Answer to Problem 4WE
The interior angle sum for octagon is
Explanation of Solution
Given information: The interior angle sum for octagon.
Theorem used:
“The sum of the measures of the angles of a convex
It is known that the octagon has 8 sides.
By using the theorem, find the interior angle sum for octagon as follows.
Thus, the interior angle sum for octagon is
b.
To find: The exterior angle sum for octagon.
b.
Answer to Problem 4WE
The exterior angle sum for octagon is
Explanation of Solution
Given information: The exterior angle sum for octagon.
Theorem used:
“The sum of the measures of the exterior angles of any convex polygon one angle at each vertex, is
By using the above mentioned theorem, the exterior angle sum for octagon is
Thus, the enterior angle sum for octagon is
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McDougal Littell Jurgensen Geometry: Student Edition Geometry
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