Geometry

Answer: A

Explanation:

A biconditional statement combines a conditional statement and its converse using the phrase "if and only if." The given statement is:

If a polygon is a square, then it has four equal sides and four right angles.

Its converse is:

If a polygon has four equal sides and four right angles, then it is a square.

When combined into a biconditional statement, we get:

A polygon is a s...