Pythagorean Theorem Tutorial

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A Right Triangle with Legs A and B has a third side C (the hypotenuse).
The hypotenuse C = SQRT(a^2 + b^2) or c^2=a^2+b^2

Calculating the Hypotenuse of a Right Triangle
When Given Two Leg Lengths



A =

B =


Hypotenuse (C)=
SQRT( A^2+B^2)

Area =



Using the Hypotenuse and One Leg Length
You can Calcualte the Third Leg.



Hypotenuse =

One Leg =


of Leg =

Area =

Illinois Learning Standards

STATE GOAL 9: Use geometric methods to analyze, categorize and draw conclusions about points, lines, planes and space.

9.A.5 Use geometric figures and their properties to solve problems in the arts, the physical and life sciences and the building trades, with and without the use of technology.

9.B.4 Recognize and apply relationships within and among geometric figures.


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Date Last Modified: 8/31/99
James P. Dildine