Addition Angle Postulate

If m∠RST = (12x -1)°, m∠RSU = (9x -15)°,
and m∠UST = 53°, find each measure.

• x = 13

  m∠RST = 155°

  m∠RSU = 102°

• x = 3

  m∠RST = 35°

  m∠RSU = 12°

• x = 22

  m∠RST = 263°

  m∠RSU = 183°

• x = 8

  m∠RST = 95°

  m∠RSU = 57°

• x = 6°

• x = 7°

• x = 12°

• x = 144°

• x = 5°

• x = 11°

• x = 33°

• x = 55°

Find the value of x.

• 88

• 78

• 84

• 74

Solve

Mathematical Equivalence

ON

Solve

Mathematical Equivalence

ON

AND find the measure of ∠ABD

• x=3/17 ∠ABD = 27°

• x=9 ∠ABD = 81°

• x=3 ∠ABD = 27°

• x= -3 ∠ABD = -27°

Calculate m∠ABC.

• 45°

• 60°

• 105°

• 15°

Calculate m∠DEF.

• 180°

• 60°

• 120°

• 80°

• 50°

• 58°

• 115°

• 226°