Where: a,b and c are the sides of the triangle. S = semi perimeter of the triangle having this formula s = (a + b + c) / 2 Triangle perimeter formula the side b expression is b = square root (c 2 - a 2) Heron formula for area of a triangleĪrea = square root (s(s - a)(s - b)(s - c)) the side a formula is a = square root (c 2 - b 2) the hypotenuse the equation becomes c = square root (a 2 + b 2) Pythagorean theoremĪlso known as Pythagoras's theorem this states that in a right trianglethe square of the hypotenuse “c” (the side opposite the right angle) equals the sum of the squares of the other two sides “a” & “b”, thus its equation can be written as presented here: Area of a triangle, A () bh square units. The formula to calculate the area of a triangle is given by. The area is defined as the region occupied by the triangle. Since it is a 2D figure, it has area and perimeter. Moreover it allows specifying angles either in grades or radians for a more flexibility. The most important property of a triangle is the sum of the interior angles of a triangle is equal to 180 degrees.
The algorithm of this right triangle calculator uses the Pythagorean theorem to calculate the hypotenuse or one of the other two sides, as well as the Heron formula to find the area, and the standard triangle perimeter formula as described below. This tool is designed to find the sides, angles, area and perimeter of any right triangle if you input any 3 fields (any 3 combination between sides and angles) of the 5 sides and angles available in the form. How does this right triangle calculator work?
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