What is an isosceles triangle? Learn the isosceles triangle definition, the properties of isosceles triangles, and view examples of isosceles triangles.

Learn how to identify scalene, isosceles, and equilateral triangles from coordinates, and see examples that walk through sample problems step-by-step for you to improve your math …

Learn how to solve for values in an isosceles triangle using the Pythagorean theorem, and see examples that walk through sample problems step-by-step for you to improve your math …

Learn how to prove congruent isosceles triangles step by step in this video lesson. Watch now to enhance your geometry skills with clear examples, followed by a quiz!

Learn how to find the area of an isosceles triangle. Discover the isosceles triangle formula and use it to calculate unknown side lengths of an isosceles triangle.

Learn how to find angle measures of an isosceles triangle given angles with variables, and see examples that walk through sample problems step-by-step for you to improve your math …

Learn how to do proofs of theorems involving isosceles triangles, and see examples that walk through sample problems step-by-step for you to improve your math knowledge and skills.

Learn how to find side lengths and angle measures of isosceles and equilateral triangles, and see examples that walk through sample problems step-by-step for you to improve your math …

Discover the classifications of triangles and learn how to classify triangles by sides and angles. Explore the properties of scalene, isosceles, equilateral, acute, obtuse, and right triangles.

Learn what a vertex angle of an isosceles triangle is with our 5-minute video lesson! View clear examples and test your knowledge with a quiz for practice.