Vertical AnglesSupplementary Angles Adjacent Angles

Angle A and B are complementary. Angle A is 63 ∘. What is angle B? 71o71o x x + 71 = x = 19 o B + 63 = B = 27 o

Angle C and D are supplementary. Angle C is 110 degrees. What is angle D? 75 X + 75 = x = D =

All angles in a triangle add up to 180 degrees x = 180 X + 90 = X = 90 0 x = 180 x + 60 = X = 120 o

All the angles in a quadrilateral add up to 360 degrees. 60 x x x = 360 x = x =125 o x = 360 x = x = 120 o