Question

1. an angle is acute when its measure is greater than 0° and less than 90°. rewrite this definition as a biconditional statement.

Explanation:

A biconditional statement combines a conditional statement and its converse. Here, the original statement is "If an angle is acute, then its measure is greater than 0° and less than 90°". The converse is "If an angle's measure is greater than 0° and less than 90°, then it is acute". Combining them gives the biconditional.

Answer:

An angle is acute if and only if its measure is greater than 0° and less than 90°.