If the sum of two angles is not 180°, then the angles are not supplementary.
<h3>Biconditional statement</h3>
A biconditional statement is a statement combing a conditional statement with its converse.
This converse shows that if one part of the sentence is treu, then the conclusion is also true.
Given the statement, "If the sum of two angles is 180°, then the angles are supplementary." If the sum of two angles is not 180°, then the angles are not supplementary.
Learn more on biconditional statement here: brainly.com/question/28327619
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