A toll-free telephone number or freephone number is a telephone number that is billed for all arriving calls instead of incurring charges to the originating telephone subscriber. For the calling party, a call to a toll-free number from a landline is free of charge.
A toll-free, Freecall, Freephone, 0120, 800, 0800, 888, 877, 866, 855, 844, 833 number is identified by a dialing prefix similar to a geographic area code. The specific service access numbers vary by country.
== History ==
The features of toll-free services have evolved as telephone networks have moved from electro-mechanical c...
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Input
The input consists of the following, in any consistent order:
A quadratic bezier curve, defined by three points:
start point (an on-curve point)
control point (an off-curve point)
end point (an on-curve point)
A reference point.
Each point is defined by two coordinates. To avo...
