Solving for Angle Measurements

What value of x proves that line p is parallel to line r?

• 14

• 12.5

• 15

• 25

Which pair of angles must be supplementary so that r is parallel to s?

• ∠2 and ∠3

• ∠5 and ∠6

• ∠4 and ∠10

• ∠6 and ∠14

This is what kind of angle?

• obtuse

• right

• straight

• acute

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°

Find x.

• 23.7

• 15.99

• 118.33

• 18

Find x.

• 0.3

• 1

• 9

What is the value of "x"?

• 20

• 30

• 25

• 15

Vertical angles are always

• acute

• total 180 degrees

• congruent (equal measures)

• adjacent angles