Assertion: curve's control point | /r/HasProperty | the distance
Facets:
Source sentences:
text: Some curves that seem simple, such as the circle, cannot be described exactly by a Bézier or piecewise Bézier curve; though a four-piece cubic Bézier curve can approximate a circle (see composite Bézier curve), with a maximum radial error of less than one part in a thousand, when each inner control point (or offline point) is the distance 4 ( 2 − 1 ) 3 {\displaystyle \textstyle {
text: -piece cubic Bézier curve can approximate a circle, when each inner control point is the distance 4 3 tan ⁡ ( t / 4 )