Angle Addition Theorem

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°

Find the value of ∠A.

• 25 degrees
• 30  degrees
• 35 degrees
• 90 degrees

What is another name for ∠H

• ∠KGH
• ∠LGH
• ∠LHG
• ∠K

∠1 and ∠2 form a linear pair.

If m∠1 = (5x + 9)° and m∠2 = (3x + 11)°, find the measure of each angle.

• m∠1 = 110° and m∠2 = 70°

• m∠1 = 109° and m∠2 = 71°

• m∠1 = 70° and m∠2 = 110°

• m∠1 = 71° and m∠2 = 109°

∠K and ∠L are complementary angles.

If m∠K = (3x + 3)° and m∠L = (10x -- 4)°, find the measure of each angle.

• m∠K = 24° and m∠L = 66°

• m∠K = 66° and m∠L = 24°

• m∠K = 40° and m∠L = 50°

• m∠K = 30° and m∠L = 60°