Question

Find the value of x for which ABCD must be a parallelogram.

Answer 1

ans is 7

Explanation:

as we know that angle B and C are equal cause it is an alternative angle so

3x-17=25-3x

so 3x+3x=25+17

6x=42

x=7

Answer 2

7

Explanation:

The value of x only makes the figure a llgm because the question says so. It needs one more fact to be a llgm.

That said, you are 1/3 the way there. Those angles marked must be equal.

3x - 17 = 25 - 3x Add 3x to both side

3x + 3x - 17 = 25 Combine

6x - 17 = 25 Add 17 to both sides

6x = 25 + 17 Combine

6x = 42 Divide by 6

6x /6 = 42/6

x = 7