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Where did you get stripes from in any of that? A surface is ruled when it can be constructed by extruding a line (or segment) along some path… like waving a rul
by cmrx64 2y ago
Where did you get stripes from in any of that? A surface is ruled when it can be constructed by extruding a line (or segment) along some path… like waving a ruler around.
- radicality 2y agoI think they meant that something striped and rectangular, like a crosswalk, is a 'ruled surface' because the stripes themselves are like the ruler ? So I guess a crosswalk (flat rectangle in 3D space), would be considered a 'ruled surface', but I don't think it meets the other requirement to make it a conoid.