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Which line is parallel to AB¯? Why?

Short Answer

Expert verified

The lineAB¯ is parallel to the lineDF¯as they form a pair of same-side interior angles.

Step by step solution

01

Step 1. Highlight ∠BAD and ∠ADF.

02

Step 2. Description of step.

If a line intersects two lines and it makes two angles on the same side such that sum of two angles is equal to 180°, then the lines are parallel and that line is a transversal of two parallel lines.

03

Step 3. Description of step.

From the figure, it can be observed that∠BAD and∠ADF are the same side interior angles, as

m∠BAD+m∠ADF=115+65=180

Therefore, linesAB¯ andDF¯ are parallel.

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