Triangle Sum and Ext Angle Theorems

Find the missing angle measure.

• 65°
• 75°
• 70°
• 90°

Find m∠A.

• 26°
• 42°
• 64°
• 58°

Find m∠B.

•  25°
•  86°
•  90°
•  65°

Find the missing angle measure.

•  175°
• 75°
•  65°
•  110°

Find the missing angle measure.

• 75°
• 55°
• 50°
• 95°

Use the Triangle Sum Theorem to find the measure of  angle A in degrees.

• 91°
• 120°
• 30°
• 35°

Use the Triangle Sum Theorem to find the measure of  angle B in degrees.

•  95°
•  81°
•  91°
•  121°

Use the Triangle Sum Theorem to find the measure of  angle C in degrees.

• 59°
• 99°
• 41°
• 54°

Use the Exterior Angle Theorem to find the measure of ∠A.

• 90°
• 25°
• 40°
• 20°

Use the Exterior Angle Theorem to find the measure of ∠B.

•  45°
•  90°
•  85°
•  100°