| PlotRegionHighlighter-package | Creates an envelope that surrounds a set of points plotted in two dimensions |
| arcAngle | The counterclockwise arc of two points relative to a third |
| centersLineSegmentIntersections | Determine if a line intersects one or more line segments |
| createCircle | A set of points defining a circle or an arc |
| drawArc | Compute the points on an arc starting with the coordinates of the starting and ending points relative to the circle center |
| envelopeArea_and_Perimeter | Calculate the area and perimeter of the envelope |
| findExteriorTangents | Determine the set of tangents to a pair of circles that do not intersect other circles or pass between circles |
| generateEnvelope | Generate an minimum-perimeter envelope that surrounds a set of points in a graph |
| PlotRegionHighlighter | Creates an envelope that surrounds a set of points plotted in two dimensions |
| tangentLine | Compute the coefficients for the line tangent to two circles |