Question

The three angles of a quadrilateral are 65,55 and 130.Find it's fourth angle.​

Answer 1

Answer:

Let the fourth angle be x,

65+55+130+x=360

because the sum of all angles in a quadrilateral is 360.

250+x =360 ,

x = 360-250. ; x =110.

hence the fourth angle is 110 degree

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