Question

the two angels of a triangle is 20 and 35 find the third angles identify the type of triangle​

Answer 1

Answer:

Let ∠1 = 20°, ∠2 = 35° and ∠3 be the angle to be found.

By angle sum property of triangle,

∠1 + ∠2 + ∠3 = 180°

20° + 35° + ∠3 = 180°

∠3 = 180° - 55°

∠3 = 125°

∠3 is more than 90° but less than 180°

∴ ∠3 is an obtuse angle.