Question

10. If one angle of a triangle is equal to the sum
of other two angles, then the truangle is
A] an esos celes triangle. [b] an obtusa Imiangle
le) an equilateral triangle (n) a right triangle
Answer

Answer 1

If one angle of a triangle is equal to the sum then it is a right angle triangle

eg :-

Let ABC be a right angle triangle , ∠C = 90°

by angle sum property

∠A + ∠B +∠C = 180°

∠A + ∠B + ∠C = 180°

∠A + ∠B = 90°

as ∠C = 90°

∠A + ∠B = ∠C