Muxuu yahay mabda'a Pythagoras ama Pythagoras' Theorem
Qisada Pythagoras waa qisada Euclidean oo loo aaneynayo falsafadii Giriigga ee qiyaastii 570 BC oo lagu magacaabo Pythagoras. Qodobka Pythagoras wuxuu sheegayaa in saddexagal toosan, isku darka laba jibbaaran ee labada dhinac ee ku xiga ay la mid tahay laba jibbaaran ee hypotenuse (dhinaca ka soo horjeeda saddexagalka toosan).