Tangents on circle: Difference between revisions

Revision as of 13:38, 22 September 2009

@@ Line 1: / Line 1: @@
 <jsxgraph width="600" height="600">
 brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5]});
+brd.options.elements.color.strokeColor = 'red';
+brd.options.elements.color.fillColor = 'red';
+brd.options.elements.color.strokeOpacity = 0.8;
+brd.options.elements.color.fillOpacity = 0.8;
 m = brd.createElement('point',[0,0]);
 b = brd.createElement('point',[3,0]);
@@ Line 6: / Line 11: @@
 p = brd.createElement('point',[2,4]);
-t = board.createElement('tangent', [c,p], {name:'polar'});
+t = brd.createElement('tangent', [c,p], {name:'polar'});
-i1 = board.createElement('intersection', [c,t,0],{visible:false});
+i1 = brd.createElement('intersection', [c,t,0],{visible:false});
-i2 = board.createElement('intersection', [c,t,1],{visible:false});
+i2 = brd.createElement('intersection', [c,t,1],{visible:false});
-t1 = board.createElement('tangent', [c,i1]);
+t1 = brd.createElement('tangent', [c,i1]);
-t2 = board.createElement('tangent', [c,i2]);
+t2 = brd.createElement('tangent', [c,i2]);
 </jsxgraph>