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

Question

campbell_st · Answer

the angle sum of the heptagon is found using the formula 

(n - 2) x 180              n = the number of sides

so ( 7 -2 )*180 = 900 

the angle sum of a heptagon is 900

is 1 angle is 126

then the other 6 angles add to     900 - 126 = 774

all 6 angles are equal in size... you need to finish the question by 
using 774 and 6 to find the size on 1 angle