Question

Three angles of quadrilateral are 60 degree 130 degree and 60 degree determine its fourth angle ​

Answer 1

Three angles of quadrilateral are 60°, 130° and 60°.

Let the fourth angle be x°.

As we know that the sum of all angles of a quadrilateral is 360°, we can say-

x+60+130+60 = 360

or, x+250 = 360

or, x = 360-250

or, x = 110

So, the fourth angle = x° = 110°

Hence, the measure of the fourth angle is 110°.

Answer 2

Given angles of a quadrilateral=60,130,60,x
( let the fourth angle be x)
Sum of angles in a quadrilateral = 360
60+ 130+60+x= 360
250+x= 360
x=110
The required angle = 110