The Pythagorean Theorem.

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

Legs

Lengths
A =

B =

or

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

Area =
(1/2)*A*B

 

 

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

Sides

Lengths
Hypotenuse =

One Leg =

or

Length
of Leg =

Area =
(1/2)*Leg*Leg

 

 

 

 

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