Question

given: $ab = bc$
prove: b is the midpoint of $overline{ac}$.
what is the format of this proof?
○ two-column proof
○ one-paragraph proof
○ flowchart proof
○ two-paragraph proof

Explanation:

A flowchart proof uses boxes to contain statements and adjacent labels for justifications, arranged in a logical sequence matching the structure shown here. The other formats do not use this boxed, sequential layout with separate justification labels.

Answer:

○ flowchart proof