<a href="https://en.wikipedia.org/wiki/en:Bisection" class="extiw" title="w:en:Bisection">Angle bisector</a>
<a href="https://en.wikipedia.org/wiki/zh:User:Wshon1104" class="extiw" title="w:zh:User:Wshon1104">w:zh:User:Wshon1104</a>
6/1/2008
<a href="https://en.wikipedia.org/wiki/zh:User:Wshon1104" class="extiw" title="w:zh:User:Wshon1104">w:zh:User:Wshon1104</a>