Respuesta :

The property demonstrated is "Co-interior" angles, meaning that in this diagram, y and 72 both add up to 180 degrees.

Therefore, you can make this equation and solve for y.

180 = 72 + y
108 = y

Therefore y = 108

The value of y is 108.

What is Co- interior angles?

When two lines are cut by a third line (transversal) co-interior angles are between the pair of lines on the same side of the transversal.

Given:

AB || CD

So,

y +7 2 = 180 (The sum of the co-interior angles is always 180.)

y= 180- 72

y= 108

Learn more about Co- interior angle here:

https://brainly.com/question/17147541

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