* Primary cause of slowness in Quadrilaterals, constant redrawing of line segment in [http://git.sugarlabs.org/projects/karma/repos/mainline/blobs/master/quadrilaterals/js/activity.js#line290|lines 290-296] | * Primary cause of slowness in Quadrilaterals, constant redrawing of line segment in [http://git.sugarlabs.org/projects/karma/repos/mainline/blobs/master/quadrilaterals/js/activity.js#line290|lines 290-296] |