# Types of Triangles Worksheets

What Are the Different Types of Triangles? There are a lot of shapes in Math that we see daily in our routine lives. Every shape has its derivatives and different kinds. Out of all the shapes, the most discussed shapes are circle and a triangle. A triangle has three sides and three vertices. There are three types of triangles, namely equilateral, isosceles, and scalene. Further subcategories under these three main heads include an isosceles right triangle, right triangle, etc. An equilateral triangle, as the name suggests, has three equal sides and three equal internal angles. In a triangle, the sum of all internal angles is equal to 180 degrees. So, in the case of an equilateral triangle, the angle measure of internal angles is equal to 60 degrees. For an isosceles triangle, any two sides and angles need to be equal. The third angle and side are always larger than the equal angles and sides. In a scalene triangle, all three angles and sides are of different measures. If an angle measures 90 degrees in a scalene triangle, then that triangle is called a right triangle.

• ### Basic Lesson

Guides students through the classification of triangles. A triangle is a polygon with three sides and three angles. The sum of the three angles is 180 degrees.

• ### Intermediate Lesson

Students learn step by step how to classify a triangle. An equilateral triangle has three equal sides and three equal angles.

• ### Independent Practice 1

A really great activity for allowing students to understand Types of Triangles. An isosceles triangle has two equal sides and two equal angles.

• ### Independent Practice 2

Students classify triangles as equilateral, isosceles, or scalene. The answers can be found below. A scalene triangle has no equal sides and no equal angles.

• ### Homework Worksheet

Students are provided with 12 problems to achieve the concepts of Types of Triangles. An example is also provided. An obtuse triangles has one angle greater than 90 degrees.

• ### Skill Quiz

This tests the students ability to understand Types of Triangles. An acute triangle has three angles that are each less than 90 degrees.