Solving Measurement of Angles Complementary Supplementary Vertical

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles

What is the supplement angle to 42°?

• 48°

• 138°

• 100°

• Not possible

Practice 1b: Name a pair of vertical angles

Practice 1a: Name a pair of complementary angles

Use the diagram to solve for m∠BAD.  ∠CAB is a right angle.
m∠1 = (x² -5x)° and m∠2 = (3x+42)°.

• 24° & 66°

• Only 24°

• Only 66°

The supplement of an angle is 12  more than twice its complement. Find the complement of the supplement of the angle.

• 12°

• 168°

• 78°

• No Solution

The supplement of an angle is four less than three times the complement of the angle. Find 0.5 of the supplement of the angle.

• 23.5°

• 43°

• 68.5°

Find the values of x, y, and m∠CED.

• x = -3, y = -5, m∠CED = 13°

• x = 3, y = -5, m∠CED = 26°

• x = 3, y= 5, m∠CED = 13°

Practice 1c: Name a pair of linear pair angles

∠1 and ∠3 can best be described as - 

• complementary angles

• supplementary angles

• vertical angles

• adjacent angles