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2 votes
A. 35
B. 85
C. 50
D. 25

A. 35 B. 85 C. 50 D. 25-example-1
User RobS
by
8.3k points

1 Answer

2 votes

Answer: B

Explanation:

Use the exterior angle theorem, which states that the exterior angle of a triangle is equal to the sum of the two remote interior angles.

In this case: 120-x= 10+x+60

Simplifying it by combining like terms: 120-x=70+x

Solving by isolating the variable: 50= 2x, x=25

Now use what we know, which is that angle A is 35 degrees, and angle B is 60, to find out that the correct answer is B, 85 degrees.

User Arjen Van Der Spek
by
8.2k points

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