Triangles solving for x

What is the sum of interior angles of a triangle?

• 60 degrees
• 90 degrees
• 180 degrees
• 360 degrees

Find the measure of each angle indicated. 

• 139°
• 66°
• 138°
• 116°

Which of the following could be angle measures for a triangle?

A 120°, 50°, 20°

B 100°, 200°, 60°

C 30°, 50°, 80°

D 40°, 50°, 90°

• A

• B

• C

• D

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

• 91°
• 120°
• 30°
• 35°

Find the measure of angle A.

• 44^o
• 96^o
• -14^o
• 63^o

Find the measure of the indicated angle. 

• 34
• 46
• 62
• 36

Find the measure of <A.

• 180
• 70
• 54
• 56

If 2 of the angles of a triangle are 30 and 70 degrees, the third angle measures...

• 80

• 100

• 60

• 90

Find x

• 40 degrees

• 21 degrees

• 42 degrees

• 39 degrees

What type of triangle is this?

• scalene
• acute
• equilateral
• isosceles