Math, asked by zerodown1024, 1 year ago

33.If the three angles of a quadrilateral are 120o , 130o, 10o then what is the fourth angle ?
(a)30o (b)100o (c) 40o (d) 90o

Answers

Answered by Anonymous
3
HI there !!

angle sum of a quadrilateral = 360°

unknown angle = x


120 + 130 + 10 + x = 360
 260 + x  = 360
x = 100°

the answer is option (b)100°
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