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OpenStudy (anonymous):
A picture frame is shaped as a heptagon. The measure of one angle is 216°. The remaining interior angles are congruent. What is the measure of each remaining interior angle in the picture frame?
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OpenStudy (anonymous):
the sum of all interior angles of a polygon = 360 so for this heptagon, one angle = 210. and let the measure of each of the remaining congruent angles be x. so u'll get, 210 + 6x = 360. now solve for x.
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