90 degrees
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Lines that intersect at right angles.
Yes. Perpendicular lines intersect to form a right or 90 degree angle. Not all intersecting lines form a right angle.
Perpendicular lines have to intersect to make a right angle Like this: + Intersecting lines don't have to intersect to make a right angle Like this: X
No, skew lines are not perpendicular. Perpendicular lines intersect at an angle of ninety degrees, while skew lines never intersect (think in three dimensions or higher).
perpendicular lines.