All the blue lines in the diagram are parallel to the base of the triangle. Find the sum of the measures of the colored angles.
Red angle = 180 - 80 - 40 = 60°
Green angle is supplemental to the 40° angle = 180 - 40 = 140°
Brown angle is supplemental to the 80° angle = 180 - 80 =100°
The Pink angle = the brown angle = 100°