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Help on this please


Well-known member
MHB Math Helper
Mar 1, 2012
look up the definitions for (1) a pair of vertical angles and (2) a linear pair of angles

Country Boy

Well-known member
MHB Math Helper
Jan 30, 2018
Much the same but angle 2 and the angle with measure 41 degrees are "supplementary angles", together they make a straight line. What is the degree measure of a straight line? And while "vertical angles" is the easiest way to get the measure of angle 3, note that it and angle 2 also form a straight line. What does that tell you about getting the measure of angle 3 from the now known measure of angle 2?