Mathalio is a designer at a snack-food factory that makes all sorts of chips from potato to tortilla.

Mathalio is currently trying to create the perfect tortilla chip.

Tortilla chips are great snacks, especially when dipped in salsa or guacamole.

This tortilla chip will be a triangle because triangular chips are the best shape for holding and dipping.

The exact shape of a triangle for a tortilla chip depends on the measure of its interior angles and the length of its sides. These measurements determine how a triangle is classified.

Acute, obtuse, and right triangles are defined by their interior angle measurements.

Equilateral, isosceles, and scalene triangles are defined by their side lengths.

In this lesson, you will learn how to identify different types of triangles. You will learn to recognize when a triangle does not exist due to angle measures or side lengths.

Then, you will be able to help Mathalio design the next great tortilla chip.