Question

9. If two angles of a triangle are 60° and 50°,
respectively. Find the third angle.
(a) 90°
(b) 80° (c) 70° (d) 60°
i 150​

Answer 1

.${\huge{\overbrace{\underbrace{\red{⫷❥ᴀ᭄n§₩ΣR⫸- }}}}}$sum of three angles of a triangle is 180°

so the third angle is {180-(60+50)}°

=(180-110)°=70°

as the three angles are acute so it is called acute triangle

Answer 2

Answer :

c) 70 °

Step by Step :

As we know that the sum of all the angles of a triangle is 180°.

Let the third angle be X

=》60° + 50° + x = 180°

=》110° + x = 180°

=》 x = 180° - 110°

=》 x = 70°

70° is the correct answer.