Hello,

I know two points of a line. How can I find the perpendicula?

Thanks for any help,

-Michael

Hello,

I know two points of a line. How can I find the perpendicula?

Thanks for any help,

-Michael

> Hello,

> I know two points of a line. How can I find the perpendicula?

> Thanks for any help,

> -Michael

define: dX=x1-x0 ; dY=y1-y0

Line Eq. ---> det | (x-x0) (y-y0) | == 0

| dX dY |

Perp. Line Eq. ---> det | (x-x0) (y-y0) | == 0

| -dY dX |

<---> dX*x+(-dY)*y+(dY*y0-dX*x0) == 0

I suggest reading an elementary calculus book -- can provide some

good insights.

Hristo

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