Question

I don't understand exactly how to solve this.​

Answer 1

Step-by-step explanation:

116° + y° = 180°. (sum of angles on a straight line = 180°)

Therefore y° = 64°.

The angles x°, y°, 72° and 125° are interior angles of a quadrilateral. (4-sided polygon)

In a quadrilateral, sum of interior angles = 360°.

So x° = 360° - y° - 72° - 125°

= 360° - 64° - 72° - 125°

= 99°.

Hence x° = 99°.

Answer 2

Answer:

• x = 99°

Step-by-step explanation:

First find y as its on straight line with 116°

• y = 180° - 116° = 64°

Now, the sum of interior angles of a quadrilateral is 360°

• x = 360° - (64° + 125° + 72°) = 99°