Triangle Angle Sum
Exterior Angle Theorem
100

What is the value of T?

T = 71

100

What is Exterior Angle Theorem?


200

What do the angles of a triangle add up to?

180 degrees

200

What is the m∠ x

m∠x= 149 degrees.

300

Find the value of ∠ x


x = 70

300

Solve for y.

y= 10

400

What is the value of ∠ a?


∠ a = 87

400


x=22

500

Solve for x.

x=27

500

What is the measure of the exterior angle?


m ∠ DBC = 150 degrees.

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