Lesson on Triangles Sum Theorem and Exterior Angle Theorem

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

• 45°
• 90°
• 180°
• 360°

What is the third angle of a triangle whose 1st angle is 34 and 2nd angle is 101?

• 32
• 39
• 45
• 54

Solve for x.

• 16
• 11
• 50
• 6

Find the measure of the missing angle.

• 90^o
• 10⁰
• 130^o
• 50^o

Find the measure of the indicated angle. 

• 34
• 46
• 62
• 36

What is the measure of angle b?

• 36^o
• 56^o
• 63^o
• 117^o

Solve for x.

• 6
• -10
• 7
• -9

Solve for x.

• 6
• 5
• -11
• 4

Find the measure of angle A.

• 20 degrees
• 22 degrees
• 21 degrees
• 100 degrees

Find the measure of angle A.

• 132 degrees
• 111 degrees
• 28 degrees
• 22 degrees