Related Clues:

• Subsidiary math theorem
• Geometry postulate
• "If it ain't broke, don't fix it," e.g.
• Axiom's kin
• Subsidiary proposition in a proof
• "Good things come to those who wait," e.g.
• An accepted truth
• Universal principle
• "Lost time is never found again," for one
• Proposition to be proved
• The more it changed to a proposition to be proved
• Generally accepted truism
• Geometrical proposition to be proved
• An accepted general truth or principle
• Old saying or precept 95)