Question

In the quadrilateral ABCD shown in the figure 10.10, 21 = 22 = 90°.

Is AD || BC? Justify your answer.​

Answer 1

Answer:

90 + 90 + x + y = 360

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

yes AD is parallel to BC

For a line to be parallel to another line the sum of interior

angles on the same side of transversal should be 180

we can see that

If line AB is transversal, and angle 1 and 2 are 90 each.

The interior angles 1 and 2 on the same side of transversal AB do measure 180.i.e 90 + 90 = 180

Hence the lines AD and BC are parallel.