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Transversal of Parallel Lines Worksheet

Explore the properties of angles formed when a transversal intersects parallel lines, including corresponding, alternate interior, alternate exterior, and consecutive interior angles.

Grade 12 Math GeometryTransversal of Parallel Lines
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Includes

Multiple ChoiceFill in the BlanksShort AnswerTrue / FalseLong Answer

Standards

CCSS.MATH.CONTENT.HSG.CO.C.9CCSS.MATH.CONTENT.HSG.GPE.B.5

Topics

geometryparallel linestransversalanglesgrade 12
7 sections · Free to use · Printable
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Transversal of Parallel Lines

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

1. In the diagram below, lines 'a' and 'b' are parallel, and line 't' is a transversal. If ∠1 = 110°, what is the measure of ∠5?

abt12435687
a

70°

b

110°

c

180°

d

55°

2. Which of the following angle pairs are always congruent when a transversal intersects two parallel lines?

a

Consecutive interior angles

b

Same-side exterior angles

c

Alternate interior angles

d

Linear pairs

3. When two parallel lines are intersected by a transversal, corresponding angles are  .

4. Consecutive interior angles are   when a transversal intersects two parallel lines.

5. Alternate exterior angles are   when a transversal intersects two parallel lines.

6. Given that line 'm' is parallel to line 'n', and a transversal 'p' intersects them. If one pair of alternate interior angles measures (3x + 15)° and (5x - 25)°, find the value of x and the measure of each angle.

7. Explain the relationship between corresponding angles and alternate interior angles when parallel lines are cut by a transversal.

8. If two lines are cut by a transversal and the alternate exterior angles are supplementary, then the lines are parallel.

T

True

F

False

9. Vertical angles are always congruent, regardless of whether the lines are parallel.

T

True

F

False

10. In the figure below, lines j and k are parallel. If m∠2 = (6x - 20)° and m∠7 = (4x + 10)°, find the value of x and the measure of all eight angles formed by the transversal. Justify each step of your solution.

jkt12435687