**CIGAL Reference Manual, Chapter 3 (Functions): perp**
===== Perp -- Calculate the perpendicular intercept from a point to a line =====
**usage: vp = perp(v0,v1,v2)**\\
**or: vp = perp(v0,vlist)**

PERP finds the point closest to vector V0, along the line defined either
by the 2 vectors V1 and V2, or by the first two vectors in the list of
vectors, VLIST.  The result is another vector, VP.

**See Also:**\\
[[jvs:cigal:manual:chapter3:length|LENGTH(3)]], 
[[jvs:cigal:manual:chapter2:line|LINE(2)]], 
[[jvs:cigal:manual:chapter1:vectors|VECTORS(1)]]

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