Geometry has always been a challenging subject for students because of the multitude of formulas to remember. The formula for calculating the perimeter of an isosceles triangle is a basic one that students will find easy to remember because an isosceles triangle is a special triangle with two equal sides, making it easier to calculate the perimeter of an isosceles triangle.
Calculate the perimeter of an isosceles triangle
Consider an example of an isosceles triangle ABC as shown below, with 2 sides AB = AC.
For a general triangle, the formula for calculating the perimeter is as follows:
P = AB + AC + BC
However, since this is an isosceles triangle with sides AB and AC being equal, we can simplify this formula as follows:
P = 2(AB) + BC = 2(AC) + BC.
Above is the formula for calculating the perimeter of an isosceles triangle. With this article, we hope that you, as students, will have a clearer understanding of the formula and be able to easily memorize them. Additionally, you can also refer to Mytour's previous article on calculating the perimeter of a triangle for more information.