Two angles in a pentagon measure 65(degrees) and the third angle measures 110(degrees). What is the measurement of the remaining two congruent angles?

Question

anonymous · Answer

help!

campbell_st · Answer

Angle sum of a polygon is 180 x ( n - 2) where n is the number of sides

a pentagon n = 5    so angle sum = 180 x ( 5 -2) 

                                                        = 540

sum of known angles is 65 + 65 + 110 = 240

then 540 - 240 = 300  

2 congruent angles just halve the answer above