Question

three angles of quadrilaterl are 150° , 60° , 100° . find the fourth angle of quadrilaterl .
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Answer 1

Answer:

$we \: know \: that \: \: all \: angles \: are \: of \\ 360° \\ so \: a + b + c + d = 360 \\ d = 50$

Answer 2

Answer:

50°

Step-by-step explanation:

Let the fourth angle be x

Sum of Angles of quad. = 360

150 + 60 + 100 + x = 360

310 + x = 360

x = 360 - 310

x = 50°