eight curve

eight curve

[′āt ‚kərv]
(mathematics)
A plane curve whose equation in cartesian coordinates x and y is x 4= a 2(x 2-y 2), where a is a constant. Also known as lemniscate of Gerono.
References in periodicals archive ?
99): Includes two collectible lights & sounds vehicles (one racer and one police car), more than 30 bar-codes, and more than 65 easy to connect pieces - three straight tracks, three four-way intersections, eight curve tracks, two cul-de-sacs, two three-way tee bases, two road closed pieces, eight street lights, two double overhead road signs, four single overhead street signs, six road cones, six road barrels, 12 street signs, two parking diverters, one parking lot, one stop sign, one toll booth, and two flip down diverters.
Riders will ricochet around figure eight curves and turn on a dime as they swoop over 1,100 feet of track on this gnarly coaster.
Where: See the phone book for one of eight Curves locations near you