https://bgk-photo.cdn.bcebos.com/doc/pic/item/a2cc7cd98d1001e9e537b9c8bf0e7bec55e797ea.jpg如图，∠AOB=30°，OC平分∠AOB，P为OC上一点，PD∥OA交OB于点D，PE⊥OA于E，OD=4cm，则PE=______．
https://bgk-photo.cdn.bcebos.com/doc/pic/item/a2cc7cd98d1001e9e537b9c8bf0e7bec55e797ea.jpg如图，∠AOB=30°，OC平分∠AOB，P为OC上一点，PD∥OA交OB于点D，PE⊥OA于E，OD=4cm，则PE=______．
发布时间：2024-09-23 13:53:38
