How Do You Classify Triangles In Geometry?
A common task in basic geometry is to classify triangles according to the definitions of various terms. Some triangles can be classified by only term, and some triangles fall into two overlapping, non-mutually-exclusive categories. This article shows you the simple steps for performing this task. First see if the triangle has three equal sides, and therefore three equal angles. If it does, then the triangle is called equilateral. The sum of the angles in any triangle is 180°, so notice how each angle here is 60°. Of course all the sides are congruent (equal in length) as well. Next, see if the triangle has two equal sides, and one unequal. If so, it is referred to as isosceles. The tick marks in the picture show the two sides that are equal, and the angle marks show that the two opposite angles are equal. We often need to use this information to solve a geometry problem which has missing values. Note that an isosceles triangle could be further classified as acute, right, or obtuse, dis
