Question

  In ∆ ABC , m ∠A=40, m∠B=80, then what is m∠C=-----?​

Answer 1

Answer:

A+B+C=180

40+80+C=180

C=180-40-80

therefore C=60 degree..

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Answer 2

Answer:

we know that angle sum property is 180°

A=40°

B=80°

let C be x

A+B+C=180°

40°+80°+x=180°

120°+x=180°

x=180°-120°

x=60° ☑

therefore, angle C is 60° ☑