Parallel and perpendicular lines
Parallel lines stay the same distance apart and never meet, like the two rails of a railway. Perpendicular lines meet or cross at a right angle, like the edges at the corner of a page. Two lines that are both perpendicular to a third line are parallel to each other.
Depth 1 · Foundation
You can tell parallel, perpendicular and other pairs of lines apart, find them around you, read the marks for them in a drawing, and know that two lines perpendicular to the same line are parallel.
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- 1
Foundation
You can tell parallel, perpendicular and other pairs of lines apart, find them around you, read the marks for them in a drawing, and know that two lines perpendicular to the same line are parallel.
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