Understanding the Sum of Angles in a Triangle

In geometry, the sum of the interior angles in a triangle always adds up to 180 degrees. This fundamental concept holds true for all types of triangles, whether it's equilateral, isosceles, or scalene. Understanding this principle is crucial in solving various geometric problems and proofs.

The formula for finding the sum of the angles in a triangle can be represented as:

[ \angle A + \angle B + \angle C = 180^\circ ]

This foundational knowledge serves as a building block for more advanced geometric concepts and is an essential skill for students studying Grade 8 mathematics in the USA.