Answer:

theorems

Answer	Crossword Clue
THEOREMS	Mathematical propositions
THEOREMS	Hypotheses
THEOREMS	Statements accepted as fact

THEOREMS	Propositions in mathematics.
THEOREMS	Some of Euclid's discoveries
THEOREMS	Formulas
THEOREMS	Ideas proposed as demonstrable truths
THEOREMS	They get tested
THEOREMS	Ones with something to prove?