what colors are the intersecting lines?
yellow
Point out at least 5 parallel lines on this picture
are there any perpendicular lines shown on this car? show me
yes
Where is a line parallel to the arrow on this table?
Can you identify 2 perpendicular lines to the arrow on the envelope?
what are two lines called if they are not parllel, or perpendicular and are not shown crossing??
skew
