Angle Relationships, Triangle Sum Theorem

If two angles of one triangle are congruent to two angles of another triangle, then the third pair of angles are congruent.

• Triangle Sum Theorem

• Exterior Angle Theorem

• Third Angles Theorem

• Congruent Triangles Theorem

Which would be the best classification for the triangle shown?

• acute isosceles

• obtuse scalene

• obtuse isosceles

• acute scalene

Which would be the best classification for the triangle shown?

• right isosceles

• obtuse scalene

• obtuse isosceles

• right scalene

Determine the missing angle.

• 47

• 57

• 53

• 133

Solve for x.

• -11

• 9

• -9

• 10

What is the measure of angle b?

• 36^o

• 56^o

• 63^o

• 117^o

Which of these angles is NOT congruent to angle 5?

• Angle 6

• Angle 8

• Angle 1

• Angle 4

What is the value of x?

• 60

• 26

• 14

• 10

Determine the missing angle.

• 145

• 55

• 35

• 45

Find the measure of the indicated angle. 

• 145 degrees

• 24 degrees

• 20 degrees 

• 21 degrees