Question

. Three angles of a quadrilateral are 65°, 115º and
60°. Find the fourth angle.​

Answer 1

Step-by-step explanation:

In a quadrilateral,

The sum of all angles of quadrilateral is 180°.

Fourth angle=360°-(65°+115°+60°)

=360°-240°

=120°

Answer 2

Answer:

let One angle of quadrilateral =x

Sum of all angle of quadrilateral =360 degree

65 +115+60+x=360

240+x=360

x=360-240

x=120 degreee

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