Learn how to find the areas of parallelograms, triangles, and trapezoids. Discover the similarities, differences, and relationships between these...

Learn the definition of a triangle in geometry. Learn about the parts of triangles and different types of triangles. Discover how to find the area of a triangle.

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 the different types of triangles? Learn the definition of a triangle, how to identify the types of triangles, and see the parts of a triangle.

Learn what the areas of triangles and rectangles are. Learn how to find the area of a triangle or a rectangle by discovering the formulas for their areas. See examples.

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 the height of a triangle. See various methods and cases and learn how to determine the height of the triangle using a formula for each with examples.

Learn what a composite figure is with real-life examples. Understand how to find the perimeter, area, and volume of a composite figure through solved examples.

Learn how to use the area of Similar Triangles Theorem to Solve Area and see example problems step-by-step for you to improve math knowledge and skills.

What is an obtuse triangle? Study the definition of an obtuse triangle and its angles. Learn to find the height and area of an obtuse triangle, with examples.