Question

Ois circumscribed about quadrilateral ABCD. What is

In the diagram below,
the value of x?

Answer 1

the answer is 50

Explanation:

Answer 2

B

Explanation:

The opposite angles of the inscribed quadrilateral are supplementary, that is

∠ ADC + ∠ ABC = 180, substitute values

2x + 80 = 180 ( subtract 80 from both sides )

2x = 100 ( divide both sides by 2 )

x = 50 → B