ACT MATH · Plane Geometry · Standard
Plane Geometry: The exterior angle of a regular polygon is math. Find its number of sides.
Polygons, Pythagorean theorem, circles.
Try the problem
The exterior angle of a regular polygon is . Find its number of sides.
Hint and answer
Concept to use
$a^2+b^2=c^2$.
Hint
Divide 360 by 45.
Answer
8
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