Question

the measures of three angles of a quadrilateral are 60,70,80 respectively then find the measure of the fourth angle of the quadrilateral
explain with proper steps
pleasse
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Answer 1

Answer:

150

Step-by-step explanation:

sum of quadrilateral=360

the three angles are 60,70,80

let the fourth angle be x

60+70+80+x=360

210+x=360

x=360-210=150

the fourth angle is 150