Practice Classifying Triangles

A triangle is a polygon with three edges and three vertices.

Equilateral, Isosceles, and Scalene.

An equilateral triangle has all three sides of equal length.

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

A scalene triangle has all sides of different lengths.

Acute, Right, and Obtuse.

A right triangle has one angle that measures 90 degrees.

An acute triangle has all angles measuring less than 90 degrees.

An obtuse triangle has one angle that measures more than 90 degrees.

There is 1 right angle in a right triangle.