1. Multiplication Postulate:
If equal quantities are multiplied by equal quantities, the products are equal.
Multiplication Postulate:
Given:
Prove:
Given
Multiplication Postulate
Def. Midpoint
Def. Midpoint
Substitution Postulate E K G R T S

2. Division Postulate: Given: Prove:
If equal quantities are divided by equal quantities, the quotients are equal.
Division Postulate:
Special Case: Halves of equal quantities are equal. E K G R T S
Given:
Prove:
Given
Division Postulate
Def. Midpoint
Def. Midpoint
Substitution Postulate