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Linear Pair Angles Worksheet

This worksheet helps students understand and apply the concept of linear pair angles, including their properties and how to solve problems involving them.

Grade 9 Math GeometryAnglesLinear Pair
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TextMultiple ChoiceFill in the BlanksShort AnswerTrue / False

Standards

CCSS.MATH.CONTENT.HSG.CO.C.9

Topics

mathgeometryangleslinear pairgrade 9
7 sections · Free to use · Printable
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Linear Pair Angles

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Read each question carefully and answer to the best of your ability. Show all your work for full credit.

A linear pair is a pair of adjacent angles formed when two lines intersect. The sum of the measures of a linear pair of angles is always 180 degrees.

1. Which of the following describes a linear pair of angles?

a

Two angles that add up to 90 degrees.

b

Two non-adjacent angles.

c

Adjacent angles that form a straight line.

d

Angles that are always congruent.

2. If one angle in a linear pair measures 70 degrees, what is the measure of the other angle?

a

20 degrees

b

90 degrees

c

110 degrees

d

180 degrees

3. The sum of the measures of angles in a linear pair is always   degrees.

4. Linear pairs are always   angles.

5. Angle A and Angle B form a linear pair. If the measure of Angle A is (3x + 10) degrees and the measure of Angle B is (2x - 5) degrees, find the value of x.

3x+102x-5

6. Explain why angles that form a linear pair are supplementary.

7. All adjacent angles form a linear pair.

T

True

F

False

8. The non-common sides of a linear pair always form a straight line.

T

True

F

False