Lines in GeometryVersion en ligne Test your knowledge of geometric concepts by correctly ordering different types of lines based on their relationships. par lyssa daud 1 Parallel lines are that never meet, two or more straight lines They are always the same distance apart and have the same slope. 2 If two lines are parallel Line 1 : y = m₁x + c they have the same slope. Line 2 : y= m₂ x + c ∴m₁ = m₂ 3 Perpendicular lines are 90-degree angle (a right angle). two straight lines that cross each other at a 4 If two lines are perpendicular Line 1 : y = m₁x + c m₁⋅m₂ = -1 Line 2 : y= m₂ x + c