在不等边△ABC中,∠ABC和∠ACB的平分线相交于点P,过点P作BC的平行线分别交AB,AC于D,E两点,PF⊥AB记住,是不等边,不是等边正确的有——(1)∠BPC=90°+1/2∠A(2)DP/AB=PE/AC(3)若△ADE的面积记为S,AD
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 14:27:22
![在不等边△ABC中,∠ABC和∠ACB的平分线相交于点P,过点P作BC的平行线分别交AB,AC于D,E两点,PF⊥AB记住,是不等边,不是等边正确的有——(1)∠BPC=90°+1/2∠A(2)DP/AB=PE/AC(3)若△ADE的面积记为S,AD](/uploads/image/z/11471938-34-8.jpg?t=%E5%9C%A8%E4%B8%8D%E7%AD%89%E8%BE%B9%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0ABC%E5%92%8C%E2%88%A0ACB%E7%9A%84%E5%B9%B3%E5%88%86%E7%BA%BF%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9P%2C%E8%BF%87%E7%82%B9P%E4%BD%9CBC%E7%9A%84%E5%B9%B3%E8%A1%8C%E7%BA%BF%E5%88%86%E5%88%AB%E4%BA%A4AB%2CAC%E4%BA%8ED%2CE%E4%B8%A4%E7%82%B9%2CPF%E2%8A%A5AB%E8%AE%B0%E4%BD%8F%2C%E6%98%AF%E4%B8%8D%E7%AD%89%E8%BE%B9%2C%E4%B8%8D%E6%98%AF%E7%AD%89%E8%BE%B9%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%9C%89%E2%80%94%E2%80%94%EF%BC%881%EF%BC%89%E2%88%A0BPC%3D90%C2%B0%2B1%2F2%E2%88%A0A%EF%BC%882%EF%BC%89DP%2FAB%3DPE%2FAC%EF%BC%883%EF%BC%89%E8%8B%A5%E2%96%B3ADE%E7%9A%84%E9%9D%A2%E7%A7%AF%E8%AE%B0%E4%B8%BAS%2CAD)
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