Angle Addition and Angle Bisectors

Calculate m∠ABC.

• 45°

• 60°

• 105°

• 15°

Calculate m∠DEF.

• 180°

• 60°

• 120°

• 80°

• x = 6°

• x = 7°

• x = 12°

• x = 144°

• x = 5°

• x = 11°

• x = 33°

• x = 55°

• 50°

• 58°

• 115°

• 226°

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=67
• x=43
• x=55
• x=12

Angle ABC measures 34^o. What is the measure of angle CBD?

• 17^o

• 34^o

• 68^o

The measure of angle ABD is 74^o. What is the measure of angle CBD?

• 148^o

• 74^o

• 37^o

AND find the measure of ∠ABD

• x=3/17 ∠ABD = 27°

• x=9 ∠ABD = 81°

• x=3 ∠ABD = 27°

• x= -3 ∠ABD = -27°