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3. Parallel & Perpendicular Lines
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Geometry

3.02 Proving lines parallel

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Practice

Interactive practice questions

Are the lines $\overleftrightarrow{AB}$›‹AB and $\overleftrightarrow{CD}$›‹CD parallel?

A transversal line intersects two vertical lines. The line on the left passes through points A and B. The line on the right passes through points C and D. The angle to the right of line $AB$AB and below the transversal line is labeled and measures $110$110. The angle to the left of line $CD$CD and above the transversal line is labeled and measures $110$110. Both angles are between the two lines $AB$AB and $CD$CD and on opposite sides of the transversal line.

Yes

A

It cannot be determined

B

No

C
Easy
< 1min

Are the lines $\overleftrightarrow{AB}$›‹AB and $\overleftrightarrow{CD}$›‹CD parallel?

Easy
< 1min

Are the lines $\overleftrightarrow{AB}$›‹AB and $\overleftrightarrow{CD}$›‹CD parallel?

Easy
< 1min

Are the lines $\overleftrightarrow{AB}$›‹AB and $\overleftrightarrow{CD}$›‹CD parallel?

Easy
< 1min
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Outcomes

GEO-G.CO.9

Prove and apply theorems about lines and angles.

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