Two lines that cross and form four right angles are described as what?

• A. Parallel
• B. Perpendicular
• C. Similar
• D. Intersecting

Answer: (B)

Perpendicular lines are lines that meet and form right angles. When two lines cross and four angles of 90 degrees appear at the intersection, that is the defining characteristic of perpendicular lines. This means the crossing creates exact right angles on all sides. If lines intersect but create angles that aren’t right angles, they’re simply intersecting lines. Parallel lines never meet. Similar describes shape or proportion, not how lines cross.