Bluebook试题11 · 第 15 题

Bluebook试题11 · 原库模块 2 · Q15 原库参考解析

In the figure shown, \( WZ \) and \( XY \)  intersect at point \( Q \), \( YQ=21 \) , \( WQ=70 \), \( WX=60 \) , and \( XQ=120 \). What is the length of \( YZ \)?