The triangle ABC is isosceles.Is the line segment DA parallel to BF?AAABBBCCCDDDEEEGGGFFF60606060

Name: Video Solution: Parallel Lines in an Isosceles Triangle: Are DA and BF Parallel?
Description: Step-by-step video solution

Parallel Lines in an Isosceles Triangle: Are DA and BF Parallel?

The triangle ABC is isosceles.

Is the line segment DA parallel to BF?

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00:06 Is line D A parallel to line B F?

00:10 Great question! When lines are parallel, alternate angles are equal, just like in a mirror.

00:40 Since alternate angles are equal here, the lines must be parallel.

00:48 Remember, if lines are parallel, their extensions are also parallel.

00:53 And that's how we solve this problem! Well done!

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The triangle ABC is isosceles.

Is the line segment DA parallel to BF?

Yes

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