Question

Three angles of a quadrilateral are 70o
, 60o
and 100o
, Find the fourth angle.

Answer 1

Answer:

The fourth angle is 130°.

Step-by-step explanation:

The Given three angles of a quadrilateral are 70°, 60°, 100°.

To find = The fourth angle

Let the fourth angle be x

We know that The sum of the all the angles of a quadrilateral is 360°.

==> 70° + 60°+ 100°+ x° = 360°

==> 230° + x° = 360°

==> x° = 360° - 230°

==> x° = 130°

Therefore, the fourth angle is 130°.

Answer 2

let the angle be x

sum of all angles of quadilateral is 360 degree so

70+60+100+ x=360

230+x=360

x=360-230

x=130

hope it may help you