Question

the three angles of a quadrilateral are 65,55 and 130 .find its fourth angle

Answer 1

the sum of angles of angles in quadrilateral is = 360 degrees

then three angles are 65,55,130

so

65+55+130+x=360
250 + x = 360
x = 360 - 250
x = 110

so the fourth angle is 110


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