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Example: If the measure of each exterior angle of a regular polygon is 90°, find the number of sides. Solution: Each exterior angle of a regular polygon of 'n' sides = 4/n rt.angles. \ 4/n * 90° = 90° n = (90°/90°)*4. n = 4. \ The number of sides = 4.
Example: Directions: Solve the following problems. Also write at least five examples of your own. 
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