What similarities and differences do you notice in the steps to construct congruent angles and an angle bisector using a compass and straightedge

In a certain pentagon, the interior angles are a, b,c, d,e where a, b,c, d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Secant ac and bd intersect at point e inside f what is the measure of aed if measurements cd equals 30 a b is 50 and cb is 170