Question

9. If one angle of a triangle is equal to the sum of the other two show that the triangle is right angle​

Answer 1

Answer:

Step-by-step explanation:

let angle be a b and c

a+b+c=180

2a=180

a=90

Answer 2

Step-by-step explanation:

a+b+c=180

c=a+b

2(a+b)=180

a+b=90

hre a+b is equal to c...so angle c is 90 degree..

so it is right angle ...

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