![]() Perimeter of the isoceles triangle = 16 units. ∴ Area of the isoceles triangle = 12 square units. Length of the equal side (a) = 5 units Base of the triangle (b) = 6 units Now, let us calculate the perimeter with the given dimensions. ![]() Height of the isosceles triangle (h) = 4 units Base of the isosceles triangle (b) = 6 units With Cuemath, find solutions in simple and easy steps.īook a Free Trial Class Solved Examples on Isosceles Triangle Calculatorįind the area and perimeter of an isosceles triangle whose height is 4 units, base is 6 units and one of its equal sides is 5 units. ![]() Use our free online calculator to solve challenging questions. The isosceles triangle calculator in this page uses the same formulas to calculate the area and perimeter of an isosceles triangle. Where a = length of the equal side b = base The perimeter of an isosceles triangle is calculated with the help of the following formula: ![]() Where b = base of the triangle h = height of the triangle The area of an isosceles triangle is calculated using the formula: Step 3: Click on "Reset" to clear the fields and enter the new values.Ī triangle with two sides of equal length is an isosceles triangle.Step 2: Click on "Calculate" to find the area and the perimeter of the isosceles triangle.Step 1: Enter the base and the equal side of the isosceles triangle in the respective input boxes.How to Use the Isosceles Triangle Calculator?įollow the steps given below to use the calculator: Example 2: Find the perimeter of an isosceles triangle, if the base is 24 inches and the equal sides are 36 inches each. This calculator helps you to calculate faster and displays the result within a few seconds. Solution: In an isosceles triangle, the perpendicular from the vertex angle bisects the base. What is an Isosceles Triangle Calculator?Īn Isosceles Triangle Calculator is an online tool which calculates the area and perimeter of an isosceles triangle, when the base and the equal side is given. Let's start with the trigonometric triangle area formula:Īrea = (1/2) × a × b × sin(γ), where γ is the angle between the sides.An Isosceles Triangle Calculator is an online tool which calculates the area and perimeter of an isosceles triangle. Substituting h into the first area formula, we obtain the equation for the equilateral triangle area: One leg of that right triangle is equal to height, another leg is half of the side, and the hypotenuse is the equilateral triangle side.Īfter simple transformations, we get a formula for the height of the equilateral triangle: See our right triangle calculator to learn more about right triangles. Height of the equilateral triangle is derived by splitting the equilateral triangle into two right triangles. The basic formula for triangle area is side a (base) times the height h, divided by 2: H = a × √3 / 2, where a is a side of the triangle.īut do you know where the formulas come from? You can find them in at least two ways: deriving from the Pythagorean theorem (discussed in our Pythagorean theorem calculator) or using trigonometry. The formula for a regular triangle area is equal to the squared side times the square root of 3 divided by 4:Īnd the equation for the height of an equilateral triangle looks as follows: ![]()
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