Question

find the measure of the third angle if the measure of two angles of a triangle is60°,65°​

Answer 1

Answer:

let the third angle be x.

60+65+x =180°

125+x=180

x=180-125=55.

Answer 2

SOLUTION:→

Given :→

In trianle ABC

∠A = 60° and ∠B= 65°

To find :→

The measure of the third angle (∠C)

So,

By angle sum property

Sum of all angles of a triangle

= 180°

∴        ∠A + ∠B + ∠C = 180°  (By A.S.P)

⇒       60° + 65° + ∠C = 180°

⇒       125° + ∠C = 180°

⇒        ∠C = 180° - 125°

⇒       ∠C = 55°

                                         

                                            ∴   ∠A = 60°

                                                 ∠B = 65°

                                                 ∠C = 55°