Ordering Sides and Angles in Triangles

The sum of the angles in a triangle is always 180 degrees.

It is a right triangle.

In a triangle, the larger the angle, the longer the opposite side.

Order the angles based on their measures; the smallest angle corresponds to the shortest side.

An acute triangle is a triangle where all three angles are less than 90 degrees.

An obtuse triangle is a triangle that has one angle greater than 90 degrees.

A scalene triangle is a triangle where all three sides and all three angles are different.

An isosceles triangle is a triangle that has at least two sides of equal length.

An equilateral triangle is a triangle where all three sides and all three angles are equal.

The longest side is opposite the largest angle.