Question

Find this 4th question...

Please answer this question guys.... please correct answer.....


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Answer 1

Step-by-step explanation:

let ABC be that triangle

sum of linear angles(here exterior +interior )=180°

interior angle at B = 180°- 100 °= 80°

similarly ,interior angle at C = 180°- 120°

= 60°

interior angle at A = 180 - (80+60) = 40°

all the angles of ∆ are 40°, 60° & 80°