IPA: /ˈθiːərəm/
KK: /ˈθiːərəm/
A statement or idea in mathematics or logic that has been proven to be true based on certain assumptions or principles.
The Pythagorean theorem is a fundamental principle in geometry.
The word 'theorem' is derived from the Greek 'theorema' (meaning a thing to be viewed or contemplated) which comes from 'theorein' (meaning to look at or to consider). The suffix '-em' indicates a noun form. Thus, 'theorem' refers to a statement or proposition that is to be considered or proved.
Think of 'theorein' which means to 'look at' or 'consider' — a theorem is something that you look at and prove in mathematics or logic.