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geom3d

 AreSkewLines
 test if two lines are skew

 Calling Sequence AreSkewLines(l1, l2)

Parameters

 l1, l2 - lines

Description

 • The routine returns true if the two given line are skew; false if they are not; and FAIL if it is unable to reach a conclusion.
 • The command with(geom3d,AreSkewLines) allows the use of the abbreviated form of this command.

Examples

 > $\mathrm{with}\left(\mathrm{geom3d}\right):$
 > $\mathrm{line}\left(\mathrm{l1},\left[\mathrm{point}\left(\mathrm{A1},0,0,0\right),\mathrm{point}\left(\mathrm{A2},1,1,0\right)\right]\right)$
 ${\mathrm{l1}}$ (1)
 > $\mathrm{line}\left(\mathrm{l2},\left[\mathrm{point}\left(\mathrm{B1},0,0,1\right),\mathrm{point}\left(\mathrm{B2},1,-1,1\right)\right]\right)$
 ${\mathrm{l2}}$ (2)
 > $\mathrm{AreSkewLines}\left(\mathrm{l1},\mathrm{l2}\right)$
 ${\mathrm{true}}$ (3)
 > $\mathrm{AreParallel}\left(\mathrm{l1},\mathrm{l2}\right)$
 ${\mathrm{false}}$ (4)

 See Also

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