Question

two angle of triangle are 50degree and 40degree.prove that the triangle is right angle​

Answer 1

Step-by-step explanation:

We know sum of all angles of a triangle is equal to 180 degrees,

let <A = 50, <B = 40

then, <C = ?

<A + <B + <C = 180

50 + 40 + <C = 180

90 + <C = 180

<C = 180-90

<C = 90 degrees

hence, the triangle is a right angled triangle

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