What is an equilateral triangle? Learn the definition and properties of equilateral triangles, as well as the angles and measurements of equilateral triangles.

Learn to calculate the area of an equilateral triangle. Understand the derivation of the formula for calculating the area and learn to prove it yourself.

What are equilateral polygons and equiangular polygons? Learn the equilateral polygon definition and the equiangular polygon definition with examples.

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.

The altitude of a triangle is a perpendicular line segment from a vertex to the opposite side. It is calculated using a formula. Examples are included.

What is perimeter? Learn the perimeter definition in math and geometry, and learn how to calculate the perimeter of different shapes, with examples.

Discover how to calculate the area of an equilateral triangle in this 5-minute video. Understand the formula through examples and test your skills with a quiz.

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 determine the truth of conditional statements, and see examples for you to improve your logic knowledge and skills.

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