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19 votes
19 votes
I need help with this and it's due tomorrow. I don't get it but it looks easy to do.



I need help with this and it's due tomorrow. I don't get it but it looks easy to do-example-1
User Mshameers
by
2.6k points

1 Answer

23 votes
23 votes

Answer:

x = 108°

Explanation:

You want the measure of the angle marked x in the given figure where parallel lines cut through a triangle.

Angle sum

The angle sum theorem tells you the angle at lower left will have the value that makes the sum of angles in the larger triangle equal to 180°.

lower left angle = 180° -77° -36° = 67°

Corresponding angles

Then the exterior angle of the smallest triangle, marked y in the attachment, will be the sum of the remote interior angles 67° and 41°:

y = 67° +41° = 108°

Angle y is a corresponding angle to angle x, so has the same measure.

x = 108°

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Additional comment

The angles in the attachment are drawn accurately.

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I need help with this and it's due tomorrow. I don't get it but it looks easy to do-example-1
User Guilty
by
3.3k points