Triangle Formula A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C.The length of the sides of a triangle may be same or different. If all the 3 sides of a triangle are equal then it is an equilateral triangle.

May 13, 2024 · What is a triangle – find out its definition, parts, properties, different types with their classifications and formulae of area and perimeter using diagrams

Try dragging the points around and make different triangles: You might also like to play with the Interactive Triangle. The three interior angles always add to 180°. The perimeter is the distance around the edge of the triangle: just add up the three sides: The area is half of the base times height. The formula works for all triangles.

Jul 23, 2025 · The area of the triangle is a basic geometric concept that calculates the measure of the space enclosed by the three sides of the triangle. The formulas to find the area of a triangle include the base-height formula, Heron's formula, and trigonometric methods. The area of triangle is generally calculated with the help of its base and height.

The sides, a and b, of a right triangle are called the legs, and the side that is opposite to the right (90 degree) angle, c, is called the hypotenuse. This formula will help you find the length of either a, b or c, if you are given the lengths of the other two. These are called Pythagorean triples.

Here you will find our support page about Geometry Formulas Triangles. You will find basic geometric formulas for triangles as well as geometry terms and definitions.

Properties of a triangle help us to identify a triangle from a given set of figures easily and quickly. Learn about angle sum property, triangle inequality property, exterior angle theorem, etc with solved examples and practice questions.

Learn about the different types of triangles in geometry, their properties, and important formulas including the Pythagorean Theorem, Sine Law, Cosine Law, and area formulas.

Triangle formulas with pictures and links to lessons on each one.

Explore essential triangle mensuration formulas, including area, perimeter, height, and base. Master triangle calculations with this easy guide.