Maeckes logo

<    1      2      3      4      5      6    >

Pythagorean theorem

The Pythagorean theorem applies to every right-angled triangle



The picture shows 3 identical rectangular triangles, ABC, CBD and ACD.

The proportions of the sides are


so that

Because AD + BD = AB, the Pythagorean theorem follows directly from this

a2 + b2 = c2


Additional information

The old Greek mathematician Pythagoras (572 BC - 500 BC) is famous for his number theory.


Deutsch   Español   Français   Nederlands   中文