Two lines are perpendicular if and only if they intersect to form a right angle.
Is this a biconditional statement? Yes/No
Is the statement true? Yes/No
Is this a biconditional statement? Yes/No
Is the statement true? Yes/No
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Yes and yes.
Biconditional means that the "if and only if" works both ways. If two lines make a right angle, that is the definition of perpendicular lines. And thus, the reverse is true: perpendicular lines form a right angle.
And obviously the statement is true.
Biconditional means that the "if and only if" works both ways. If two lines make a right angle, that is the definition of perpendicular lines. And thus, the reverse is true: perpendicular lines form a right angle.
And obviously the statement is true.