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They are adjacent angles and their common side is an opposite rays.

• Intersecting lines

• Parallel Lines

• Linear Pair

• Vertical Angles

They are non-adjacent angles formed when two lines intersect.

• Vertical Angles

• Parallel Lines

• Adjacent angles

• Linear Pair

Lines that will never intersect or meet at a common point, even when you extend the lines on opposite directions

• Intersecting lines

• Perpendicular lines

• Linear Pair

• Parallel Lines

Lines that meet at a common point.

• Linear Pair

• Vertical Angles

• Parallel Lines

• Intersecting lines

Pair of angles that share a common side and common vertex.

• Supplementary angles

• Adjacent angles

• Consecutive angles

• Vertical Angles