Two lines that meet at a right angle are said to be what?
AParallel
BConcurrent
CPerpendicular
DCollinear
Answer & Solution
Correct answer: C. Perpendicular
1. Lines forming a 90° angle are perpendicular.
2. Parallel lines never meet.
3. Collinear describes points on one line, not two lines at right angles.
_Source: Wikipedia, Angle, Common angles_
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