Question

Ulale Euellas fifth postulate.
12. In the following figure, find the value of x and y and then show that AB || CD
800
A
B
у
है
с
D
1000​

Answer 1

Answer:

In the given figure, find the values of x and y and then show that AB || CD.

Now,

50° + x = 180°

x = 180°-50°

X = 130°

Also,

y = 130°

* X = y

So, alternate angles are equal

From theorem 6.3: If a transversal intersects two lines such that pair of alternate interior angles are equal, then lines are parallel.

.. AB || CD

50°

A

(Linear pair)