Question

In Fig. 6.28, find the values of x and y and then
show that AB || CD.​

Answer 1

Answer:

please attach the fig also

Answer 2

Step-by-step explanation:

x+50° = 180°

∴ x = 130°

We also know that vertically opposite angles are equal.

So, y = 130°

In two parallel lines, the alternate interior angles are equal. In this,

x = y = 130°

This proves that alternate interior angles are equal and so, AB CD.