Question 1040194
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The measure of a {{{highlight(interior_angle_of_a)}}} regular polygon is 135°. Find the measure of each exterior angle and the number of side.
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The measure of each exterior angle is 180° - 135° = 45°.

The number of sides is {{{360/45}}} = 8.   (Because the sum of all exterior angles of a polygon is 360°).
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Notice that I edited the condition to the correct form.