Question

what type of proof is used extensively in geometry?
o two - column proof
o three - column proof
o one - column proof
o inductive proof
o none of the above

Explanation:

In Geometry, the two - column proof is extensively used. It has two columns, one for the statements (what is being proved) and one for the reasons (theorems, postulates, definitions etc. that justify each statement). Inductive proof is more about generalizing from specific examples and is not as structured as the two - column proof for geometric proofs. One - column and three - column proofs are not standard or as commonly used as the two - column proof in the context of Geometry.

Answer:

two - column proof