Angle Relationships of Triangles

Find the exterior angle, using the Exterior Angle Theorem. What is the measure of "?".

• A

• B

• C

• D

What is the measure of angle b?

• 36^o

• 56^o

• 63^o

• 117^o

Find the missing angle using the Triangle Sum Theorem.

• 25 degrees

• 137 degrees

• 43 degrees

• 34 degrees

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

• 45°

• 90°

• 180°

• 360°

• 95

• 85

• 90

• 47

• 48

• 180

• 1

• 100

• 47.5

• 89

If one angle of a triangle is equal to the sum of other two angles, then the triangle is ____

• an isosceles triangle

• an obtuse angled triangle

• an equilateral triangle

• a right angled triangle

Match the following

• 79^o

• ∠3

• 53^o

• ∠1

• 101^o

• ∠2

Answer explanation

Tags

TEKS.MATH.9-12.III.A.1

Mathematical Equivalence

ON

Answer explanation

Piece + Piece = Whole

Tags

G.CO.A.8

Quinn made a statement about the triangle shown. Determine whether his statement is true or false.

• True

• False