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Parallel and perpendicular lines - Lines and angles: Video playlist - BBC Bitesize
Parallel lines never meet and perpendicular lines meet at 90 degrees.
↗ https://www.bbc.co.uk/bitesize/topics/zbsjcxs/watch/zw4p7v4Parallel lines never meet and perpendicular lines meet at 90 degrees.
↗ https://www.bbc.co.uk/bitesize/topics/zbsjcxs/watch/zw4p7v4