Question

Given a triangle with angles of 23, 90, 67, what type of triangle is it: acute, equiangular, obtuse, or right?

Answer 1

It would be a right angled triangle because all triangles with a 90 degree angle are right angle triangles : 90 degrees is a right angle

Answer 2

It is a right triangle because if it contains a 90 degree angle (a right angle), it's a right triangle.

Explanation: