1、如图,△ABC中,∠B=30°,P为AB上一点,BP/PA=1/2 ,PQ⊥BC于Q,连结AQ,则PQ/AQ=?2、如图,在△ABC中,D,E在BC上,△ADE是等边三角形,∠BAC=120°,如果BD=4,EC=9,那么△ADE的周长为?第二题图地址:
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/08 18:54:22
![1、如图,△ABC中,∠B=30°,P为AB上一点,BP/PA=1/2 ,PQ⊥BC于Q,连结AQ,则PQ/AQ=?2、如图,在△ABC中,D,E在BC上,△ADE是等边三角形,∠BAC=120°,如果BD=4,EC=9,那么△ADE的周长为?第二题图地址:](/uploads/image/z/10887998-14-8.jpg?t=1%E3%80%81%E5%A6%82%E5%9B%BE%2C%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0B%3D30%C2%B0%2CP%E4%B8%BAAB%E4%B8%8A%E4%B8%80%E7%82%B9%2CBP%2FPA%3D1%2F2+%2CPQ%E2%8A%A5BC%E4%BA%8EQ%2C%E8%BF%9E%E7%BB%93AQ%2C%E5%88%99PQ%2FAQ%3D%3F2%E3%80%81%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2CD%2CE%E5%9C%A8BC%E4%B8%8A%2C%E2%96%B3ADE%E6%98%AF%E7%AD%89%E8%BE%B9%E4%B8%89%E8%A7%92%E5%BD%A2%2C%E2%88%A0BAC%3D120%C2%B0%2C%E5%A6%82%E6%9E%9CBD%3D4%2CEC%3D9%2C%E9%82%A3%E4%B9%88%E2%96%B3ADE%E7%9A%84%E5%91%A8%E9%95%BF%E4%B8%BA%3F%E7%AC%AC%E4%BA%8C%E9%A2%98%E5%9B%BE%E5%9C%B0%E5%9D%80%EF%BC%9A)
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