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Math K-Plus

User Friendly Perimeter Of A Right Triangle Calculator


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How To Find The Perimeter Of A Right Triangle


Let's look at the geometric characteristics of a right triangle. But first, please review the definition of Perimeter Of Two-Dimensional Shapes, Definitions Of Exponents, and Definitions Of Square Roots, Angle, and Right Angle.
  • A right triangle has two unique features.
  • The first unique feature of a right triangle, it has one interior angle of exactly 90°. In the example below, this is angle ∠AB. Also note that the sum of the interior angles is 180°.
  • The second unique feature of a right triangle is the length of the triangle opposite ∠AB is computed from the lengths of sides A and side B. In the example below, the length of side C is the square root of A2 plus B2 plus the length of side A and side B.
  • Special note, all side of an right triangle must be greater than zero.

Perimeter Of A Right Triangle Formula
Formula = Side A + Side B + Square-Root(Side A2 + Side B2) =
Formula = A + B + Square-Root(A2 + B2) =
Formula = A + B + √(A2 + B2)


Right Triangle



Perimeter Of A Right Triangle Calculator
Field Name User Input
Length Of A
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Length Of B
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Your Answer
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Correct Answer

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