Pythagoras’ Theorem (HSC SSCE Mathematics Standard): Flashcards

Hypotenuse² = sum of squares of other two sides

Side opposite right angle; longest side

$h^2 = a^2 + b^2$

Right-angled triangles only

Add squares of shorter sides, then square root

Subtract known side² from hypotenuse², then root

Opposite the right angle

Longest side

Taking square root before subtracting

Find missing side length in right-angled triangle