Pythagoras (OCR GCSE Maths): Flashcards

$a^2 + b^2 = c^2$

The hypotenuse (longest side)

The two shorter sides

The longest side of a right-angled triangle

Opposite the right angle

$c = \sqrt{a^2 + b^2}$

$a = \sqrt{c^2 - b^2}$

When you know both shorter sides

When you know hypotenuse and one shorter side

13 cm

8 cm

Always the longest side

Pythagoras (or followers), around 600 BC

4.77 m (to 2 d.p.)