Question

a triangle has side lengths of a, b, and c centimeters. does each angle in the triangle measure less than 90 degrees?

Answer 1

It depends, not necessarily that it is below 90 degrees, You can have one angle that is greater than 90 degrees and you can have all of the angles that are below 90 degrees as long as its total exterior angle is 180.

Explanation:

For example;

an equilateral with 60 degrees at each angle.

a right triangle with one angle at 90 degrees and the remaining is below it

an obtuse triangle with one angle greater than 90 degrees and the remaining is below it.