In this lesson on isosceles triangles, you will learn about the properties of these triangles and how to apply them. An isosceles triangle has two equal sides and two equal angles at the base. You can prove this by drawing an angle bisector and creating two congruent triangles. The reverse is also true: if a triangle has two equal angles at the base, then it has two equal sides. This lesson covers isosceles triangles and equal lateral triangles, and how to solve problems involving them.
Learn about properties of isosceles triangles and how this information is useful.