A picture frame is shaped as a heptagon. The measure of one angle is 144°. The remaining interior angles are congruent. What is the measure of each remaining interior angle in the picture frame?

126°

180°

174°

150°

Question

A picture frame is shaped as a heptagon. The measure of one angle is 144°. The remaining interior angles are congruent. What is the measure of each remaining interior angle in the picture frame?

 126°

 180°

 174°

 150°

anonymous · Answer

Total degree of a heptagon is equal to 900 degrees 
So to find the degree of each of the congruent angle. You need to subtract 144 from 900. 
900-144 = 756. 756 degrees is equal to all 6 angles. 756/6 = 126. 

900-144=6x
x = 126 (Answer)

anonymous · Answer

thanks :)