Pythagoras' theorem (Edexcel GCSE Maths): Flashcards

Missing side length in right-angled triangle

Hypotenuse

$a^2 + b^2 = c^2$ where $c$ is longest side

No, must memorise it

Right-angled triangle, 2 known sides, 1 missing side

Square symbol in corner

$c$ (the longest side)

Subtract: $x^2 = c^2 - a^2$

Ramps, flagpoles, ladders, building structures

$x^2$ button

$\sqrt{x}$ button

Show every step of working clearly