Question

How would you write a flow chart proof for the following problem: Given: B is the midpoint of line AC. Prove:2AB=AC

Answer 1

B midpoint of AC: Given

AB + BC = AC: Definition of a mid-point (the part that says a mid-point divides a line segment into two parts)

AB = BC: Definition of a mid-point (the part that says the two parts are equal)

AB + AB = AC: Substitution property of equality

2AB = AC: Definition of multiplication for whole numbers
Q.E.D.

flowchart: