Triangle Angle Sum

THROWBACK: ∠1 and ∠5 are examples of which type of angle pair?

• Alternate exterior angles

• Alternate interior angles

• Vertical angles

• Corresponding angles

The Triangle Sum Theorem states that the sum of all angles in a triangle is ______. 

• 45°
• 90°
• 180°
• 360°

Find the measure of each angle indicated.

• 62
• 53
• 71
• 50

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Solve for x.

• 16
• 11
• 50
• 6

The angles inside an equilateral triangle are all ...

• 20 degrees

• 50 degrees

• 60 degrees

• 45 degrees

A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?

• 45°, 65°, 70°

• 150°, 110°, 100°

• 50°, 50°, 50°

• 90°, 90°, 90°

Find the missing angle in the figure.