Everyone ignore Pushwood i just want to make a story not a war
Lëtzebuergesch
... then Garry the chicken ended up going to the FIDE tournaments...
如果在共轭的两二相对截线中两条与一二相对截线相切的直线相交于任一截线之内,又任作平行于两切线的两直线相交并交于另一二相对截线,则两切线上正方形的比,将如同介于截线和二直线交点之间二线段所夹的矩形与类似取得的二线段所夹矩形的比.