What is the measure of QRS?

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?

The solution set for 5v2 – 125 = 0 is

Which two undefined geometric terms always describe figures with no beginning or end?