Triangle Sum Theorem

Classify the triangle by its sides and angles.

• obtuse isosceles

• acute scalene

• acute equilateral

• obtuse scalene

Classify the triangle by its angles and sides.

• right isosceles

• acute equilateral

• acute isosceles

• obtuse scalene

Find the measure of the missing angle.

• 55°

• 40°

• 110°

• 74°

Find the measure of the missing angle.

• 85°

• 102°

• 50°

• 135°

Solve for x.

• -6

• 7

• 10

• 5

Solve for x.

• -10

• -9

• -7

• -6

Find the measure of angle A.

• 105°

• 60°

• 45°

• 25°

Find the measure of angle A.

• 35°

• 135°

• 25°

• 20°

Find the measure of the missing angle.

• 32°

• 45°

• 37°

• 36°

Find the measure of the missing angle.

• 24°

• 118°

• 23°

• 25°