INTERNAL AND EXTERNAL ANGLES OF A TRIANGLE

Find the value of y.

• y=59

• y=60

• y=45

• y=50

If triangle ACD is isosceles, find the measures of the angles ADC, CAD, ACD, and ACB.

• ADC=40°

  CAD=40°

  ACD=110°

  ACB=50°

• ADC=30°

  CAD=30°

  ACD=120°

  ACB=60°

• ADC=30°

  CAD=40°

  ACD=110°

  ACB=60°

• ADC=40°

  CAD=50°

  ACD=100°

  ACB=40°

Find the measure of angle CBD

• 85°

• 90°

• 100°

Find the values of x and y

• x=90°

  y=110°

• x=80°

  y=100°

• x=70°

  y=120°

• x=80°

  y=110°

Find the measures of angle a and b.

• a=63°

  b=50°

• a=53°

  b=40°

• a=43°

  b=70°

• a=50°

  b=43°

Find the measures of angles c and d.

• c=26°

  d=31°

• c=27°

  d=32°

• c=36°

  d=35°

• c=25°

  d=35°

Find the value of x and the measures of angles A, B, and C.

• x=30

  A=30°

  B=63°

  C=87°

• x=23

  A=23°

  B=46°

  C=111°

• x=33

  A=33°

  B=66°

  C=81°

Finf the value of x and the measures of the angles A, B, and C.

• x=50

  A=50°

  B=150°

  C=10°

• x=60

  A=60°

  B=180°

  C=10°

• x=40

  A=40°

  B=120°

  C=20°