Five Circle Theorem: Difference between revisions
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for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
l[k] = brd.create('segment',[p[k],p[(k+1)%5]],{strokeColor:'black',strokeWidth:1 | l[k] = brd.create('segment',[p[k],p[(k+1)%5]],{strokeColor:'black',strokeWidth:1}); | ||
} | } | ||
for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
i[k] = brd.create(' | i[k] = brd.create('intersection',[l[k],l[(k+2)%5],0],{name:'',strokeColor:'#EAEA00',fillColor:'#EAEA00'}); | ||
} | } | ||
for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
c[k] = brd.create('circumcircle',[p[k],i[k],i[(k+2)%5]], | c[k] = brd.create('circumcircle',[p[k],i[k],i[(k+2)%5]],{strokeColor:'gray', strokeWidth:1, point: {visible: false}}); | ||
} | } | ||
for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
j[k] = brd.create(' | j[k] = brd.create('intersection',[c[k],c[(k+2)%5],0],{name:'',strokeColor:'#EA0000',fillColor:'#EA0000'}); | ||
} | } | ||
cc = brd.create('circumcircle',[j[0],j[2],j[3]], | cc = brd.create('circumcircle',[j[0],j[2],j[3]],{strokeColor:'red',strokeWidth:2,point:{strokeColor:'#000000',fillColor:'#000000',size:1}}); | ||
brd.update(); | |||
</jsxgraph> | </jsxgraph> | ||
| Line 48: | Line 45: | ||
for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
i[k] = brd.create(' | i[k] = brd.create('intersection',[l[k],l[(k+2)%5],0],{name:'',strokeColor:'#EAEA00',fillColor:'#EAEA00'}); | ||
} | } | ||
for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
c[k] = brd.create('circumcircle',[p[k],i[k],i[(k+2)%5]], | c[k] = brd.create('circumcircle',[p[k],i[k],i[(k+2)%5]],{strokeColor:'gray', strokeWidth:1, point: {visible: false}}); | ||
} | } | ||
for (k=0;k<5;k++) { | for (k=0;k<5;k++) { | ||
j[k] = brd.create(' | j[k] = brd.create('intersection',[c[k],c[(k+2)%5],0],{name:'',strokeColor:'#EA0000',fillColor:'#EA0000'}); | ||
} | } | ||
cc = brd.create('circumcircle',[j[0],j[2],j[3]], | cc = brd.create('circumcircle',[j[0],j[2],j[3]],{strokeColor:'red',strokeWidth:2,point:{strokeColor:'#000000',fillColor:'#000000',size:1}}); | ||
brd.update(); | |||
</source> | </source> | ||
[[Category:Examples]] | [[Category:Examples]] | ||
[[Category:Geometry]] | [[Category:Geometry]] | ||
Latest revision as of 15:10, 20 February 2013
The underlying JavaScript code
var brd = JXG.JSXGraph.initBoard('jxgbox',{boundingbox:[-5,5,5,-5]});
var p = [], l = [], i = [], c = [], j = [], k;
p[0] = brd.create('point',[-2.5,-3],{name:'',strokeColor:'#7355ff',fillColor:'#7355ff'});
p[1] = brd.create('point',[-0,4],{name:'',strokeColor:'#7355ff',fillColor:'#7355ff'});
p[2] = brd.create('point',[2.5,-3],{name:'',strokeColor:'#7355ff',fillColor:'#7355ff'});
p[3] = brd.create('point',[-4,0],{name:'',strokeColor:'#7355ff',fillColor:'#7355ff'});
p[4] = brd.create('point',[4,0],{name:'',strokeColor:'#7355ff',fillColor:'#7355ff'});
for (k=0;k<5;k++) {
l[k] = brd.create('segment',[p[k],p[(k+1)%5]],{strokeColor:'black',strokeWidth:1});
}
for (k=0;k<5;k++) {
i[k] = brd.create('intersection',[l[k],l[(k+2)%5],0],{name:'',strokeColor:'#EAEA00',fillColor:'#EAEA00'});
}
for (k=0;k<5;k++) {
c[k] = brd.create('circumcircle',[p[k],i[k],i[(k+2)%5]],{strokeColor:'gray', strokeWidth:1, point: {visible: false}});
}
for (k=0;k<5;k++) {
j[k] = brd.create('intersection',[c[k],c[(k+2)%5],0],{name:'',strokeColor:'#EA0000',fillColor:'#EA0000'});
}
cc = brd.create('circumcircle',[j[0],j[2],j[3]],{strokeColor:'red',strokeWidth:2,point:{strokeColor:'#000000',fillColor:'#000000',size:1}});
brd.update();
