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?

Question

anonymous · Answer

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.