Introduction to Proof

Question 1

Which angles are linear pairs? Check all that apply.

Revolt · Accepted Answer

A: ∠SRT and ∠TRV; C: ∠VRW and ∠WRS; D: ∠VRU and ∠URS

Question 2

Which is a pair of vertical angles?

Revolt · Accepted Answer

B: ∠TRS and ∠VRW

Question 3

What is the value of x?

Revolt · Accepted Answer

B: 45

Question 4

Question 4

Revolt · Accepted Answer

When two lines intersect, they form linear pairs and vertical angles. The angles in a linear pair are supplementary, meaning their measures add up to 180 degrees. Therefore, if you know the measure of one angle, you can find its linear pair by subtracting from 180. Vertical angles are congruent, so their measures are equal. By using these two properties, knowing just one angle measure allows you to determine the measures of all four angles created by the intersection.

Question 5

What is m∠SRW?

Revolt · Accepted Answer

C: 126

Question 6

Question 6

Revolt · Accepted Answer

A

Question 7

Question 7

Revolt · Accepted Answer

A,B

Introduction to Proof Answers

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