What theorem or postulate can be used to justify that hig=fie

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

Find the solutions for a triangle with a =16, c =12, and b = 63º

Ahypothesis is: a the average squared deviations about the mean of a distribution of values b) an empirically testable statement that is an unproven supposition developed in order to explain phenomena a statement that asserts the status quo; that is, any change from what has been c) thought to be true is due to random sampling order da statement that is the opposite of the null hypothesis e) the error made by rejecting the null hypothesis when it is true