Topics
2. Parallel & Perpendicular Lines
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United States of AmericaFL
Grade 912

2.02 Proving lines parallel

Lesson
Practice
Adaptive
Worksheet

Interactive practice questions

Select the diagram showing a pair of parallel lines:

Two lines with arrowheads at their endpoints indicating that the lines extend indefinitely in both directions. Both lines have an identical arrow marking, pointing in the same direction.

A

Two lines with arrowheads at their endpoints indicating that the lines extend indefinitely in both directions. The arrowheads pointing at the top right direction are closer to each other than the arrowheads pointing at the bottom left direction.

B

Two lines with arrowheads at their endpoints indicating that the lines extend indefinitely in both directions. The arrowheads pointing at the left direction are closer to each other than the arrowheads pointing at the right direction.

C

Two lines with arrowheads at their endpoints indicating that the lines extend indefinitely in both directions. The arrowheads pointing at the top left direction are closer to each other than the arrowheads pointing at the bottom right direction.

D
Easy
< 1min

Select the diagram showing a pair of parallel segments:

Easy
< 1min

Eileen was given the following diagram, in which $m\angle ABE=m\angle BEF=62^\circ$m∠ABE=m∠BEF=62°. She immediately marked the parallel symbols on the diagram to show that $\overleftrightarrow{AB}\parallel\overleftrightarrow{DE}$›‹AB∥›‹DE .

Easy
< 1min

Consider this diagram and answer the questions that follow:

Medium
< 1min
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Outcomes

MA.912.GR.1.1

Prove relationships and theorems about lines and angles. Solve mathematical and real-world problems involving postulates, relationships and theorems of lines and angles.

MA.912.LT.4.8

Construct proofs, including proofs by contradiction.

MA.912.LT.4.10

Judge the validity of arguments and give counterexamples to disprove statements.

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