Question

three angles of a quadrilateral are equal to 100 degrees 60 degrees and 80 degrees respectively find its fourth angle

please give me the answer in detail and in simple language ​

Answer 1

Answer:

we know that

the sum of all angles is. 360 degree

if we add all angle like

100+60+80+D= 360

240+D=360

D=360-240

D=120

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