A triangle is a three-sided regular polygon in which the sum of any two sides is always larger than the third. This is a triangle’s one-of-a-kind quality. A right-angled triangle is one in which one of the angles is equal to 90 degrees. The total of the other two angles is 90 degrees. The perpendicular and the base of the triangle are the sides that include the right angle. The hypotenuse, which is the longest of the three sides, is the third side.The hypotenuse is always opposite to the right angle. Calculating the area of a right triangle is the easiest job. The area of the right-angled triangle is measured in square units and is in the two-dimensional region. It is the amount of space that a two-dimensional item occupies.

If one angle is 90 degrees and the other two angles correspond to 45 degrees, then the triangle is called an isosceles angled triangle because the adjacent sides are 90 degrees apart and of equal length. A right triangle is an isosceles triangle, which means that its two sides are equal. The right-angled triangle’s three sides are connected, Pythagoras’ theorem explains this relationship. According to this theorem, the square of the length of the hypotenuse is equal to the sum of the square of the other two sides. The base, hypotenuse, and perpendicular are all termed Pythagorean triplets, and the triangle is known as a Pythagorean triangle if all three sides are integers.

To calculate the area of the right-angled triangle you must multiply the hypotenuse’s two adjacent sides, the base, and the height, to determine the triangle’s area. Divide the base and height lengths in half once they’ve been multiplied. You’ve now figured out how to calculate the area of a right triangle using the formula. If you want to cross-check your answer or follow the long route then you can also use Heron’s formula.

Follow the steps given below to calculate the area of a right-angled triangle using both the formulas.

  1. Base and perpendicular formula:
    • The area of a right-angled triangle can be computed easily if the lengths or measurements of the base and perpendicular of the required triangle are known. Simply, calculate half of the product of the length of the base and perpendicular. This formula is quite simple and easy to use if the correct measurements are given.
    • Even if the measurement of any of the sides is missing, then first calculate the length of the missing side. To calculate its length use the relation between the three sides i.e. use the Pythagoras theorem. Sometimes, the other angles and one side is given. In this case, use trignometric identities to calculate the missing sides.
  2. Heron’s formula:
    • This formula is also quite simple. Firstly make sure that the measurements of all three sides are known or given. If that’s not so, then find the missing sides and calculate the length of all the sides.
    • Next, calculate the value of the semi-perimeter of the given right-angled triangle. Semi-perimeter is nothing but the half of the perimeter i.e. half of the sum of lengths of all the three sides of the given right-angled triangle.
    • Now, when the lengths of all the sides and semi-perimeter are known, replace these measurements directly into Heron’s formula. Focus on the calculation and you will get the accurate area of the right-angled triangle.

In the actual world, right triangle geometry has several applications. Carpenters use it to build cabinets, surveyors use it in their jobs, and you may measure towering constructions using what you’ve learned. They’re also used in conjunction with trigonometry to answer real-world distance issues, such as determining how far a ladder of a certain length can be pushed up against a wall if the angle the ladder makes with the ground is also known. The hypotenuse of a right-angled triangle is the length of a staircase. It has proven to be quite beneficial because of its extensive and easy-to-read content.