💯 Finding Perimeters using Pythagoras' Theorem. Watch this video!

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To find the perimeter of a right triangle using the Pythagorean theorem, you need to know the lengths of all three sides. The theorem states that the sum of the squares of the two shorter sides in a right triangle equals the square of the longest side, the hypotenuse.

Given the lengths of two sides, you can use the theorem to find the length of the third side. Once you have found the lengths of all three sides, you can add them to find the perimeter.

The formula to find the length of the missing side, c, is c = √(a^2 + b^2), where a and b are the lengths of the two shorter sides. The formula for perimeter is P = a + b + c, where a, b, and c are the lengths of all three sides.

The perimeter of a quadrilateral is the sum of the lengths of all four sides. To find the perimeter of a quadrilateral, you need to know the lengths of all four sides.

The formula for perimeter is P = a + b + c + d, where a, b, c, and d are the lengths of the four sides of the quadrilateral.

The specific method for finding the perimeter depends on the type of quadrilateral. For example, if it's a square, you only need to know the length of one side to find the perimeter, as all sides are equal. If it's a rectangle, you need to know the length and width lengths to find the perimeter. For more complex shapes like a trapezoid, you may need to use other mathematical tools in addition to the formula for the perimeter to find the lengths of all sides.