Question

Classify the following triangles as acute-angled, obtuse-angled, right-angled triangles according to the magnitude of their angles.

(iii) $40°,50°,90°$

Answer 1

An acute angle triangle is a type of triangle in which all the three internal angles of the triangle is less than $90°$

Obtuse angle triangle is a type of triangle in which any one of the angle is more than $90°$

A right angle triangle is a type of triangle that has one angle that measures $90°$

So here we have one of the angle of a triangle = $90°$

Hence, this is a right angle triangle.