Talk:Incircle and excircles of a triangle
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I recently added an external link to this page to another related page (www.mathopenref.com/incenter.html) Someone removed the link saying it was commercial which it is not. The reason it is an external page is that it contains a java applet to convey a deeper understanding of the subject. This is not possible in Wikipedia.
Other links on this page are to cuttheknot which is clearly ad-based and therefore commercial, yet these links remain.
Could the person that deleted the link explain why? Should I remove these too?