Identify Parallel Skew and Perpendicular Lines

Lines in the SAME plane that will never meet.

• Perpendicular Lines

• Parallel Lines

• Skew Lines

Lines in different planes that will never meet.

• Parallel Lines

• Intersecting Lines

• Skew Lines

Lines that meet at right angles.

• Parallel Lines

• Perpendicular Lines

• Intersecting Lines

• Skew

• Perpendicular

• Parallel

Identify a pair of pependicular lines.

• Lines AB and CD

• Lines AB and BD

• Lines AC and BD

• LInes BC and BD

Is line e perpendicular to line g?

• Yes, because line e is perpendicular to line f, and lines f and g are parallel.

• No, because while line e is perpendicular to line f, we don't have enough information to know lines f and g are parallel.

What kinds of lines are pictured?

• Parallel

• Perpendicular

• Intersecting

• Skew

Which segment is skew to IJ?

• GH

• AJ

• HI

• AB

Given p ∥ r and m∠8 = 119, find m∠11.

• 29

• 61

• 119

• 151

Determine whether AB and DF are parallel, perpendicular, or neither. A(−2, −11), B(6, 5), D(−7, −10), F(2, 8)

• parallel

• perpendicular

• neither

• both parallel and perpendicular