73.5+16.5 = 90 degrees which is a complementary angle
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false but You can find the measure of an exterior angle by using supplementary angles.
by 60 degree and 90 degree
First draw a 90 degree angle .Than draw a 20 degree angle from that 90 degree angle . Than the rest of the angle will be 90-20=70 .Now bisect the 70 degree angle we will get 70/2=35. Now add the rest of the angle means 35+20 =55 GOT 55 DEGREE ANGLE
An angle of 65° can not be trisected using a compass and straight edge.
A 127.5 degree angle can be constructed by using a protractor and a straight edge.