Solving Equations to Find Unknown Angle Measures

Solve for x.

• 16

• 11

• 50

• 6

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62

Find the missing angle.  Find x.

• 20^o

• 70^o

• 160^o

• 180^o

• 5

• 35

• 25

• 0

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°

Use an algebraic equation to find the measures of both angles

• x = 3x - 20; 10° and 10°

• x + 3x - 20 = 90; 27.5° and 62.5°

• x + 3x - 20 = 180; 50° and 130°

• x + 3x - 20 = 180; 150° and 30°

Solve for x

• 5

• 90

• 25

• 10

What is the value of x?

What equation should you use to find the value of x if the measure of angle PQS is 165?

• 165+40=5x

• 5x+40=165

• 5x-40=165

• 5x+165=40