Lines
•Line: y = mx
+ a
•Line: sum of
a point and a vector
P = P1 + a`d
(where`d is a column vector)
•Line: Affine
sum of two points
P = a1P1 + a2P2,
where a1 + a2 = 1
Line
Segment: For 0 £ a1, a2 £ 1, P lies between P1 and P2
•Line: set of points equidistant from the origin in
the direction of a unit
vector.
P1
`d
P1
P2
