如图,P是△ABC内一点,连结PB、PC(1)当∠1=1/2∠ABC,∠2=1/2∠ACB时你能说明∠P=90°+1/2∠A成立吗?(2)当∠1= 1/3∠ABC;∠2=1/3∠ACB时,猜猜看:∠P与∠A又是什么关系?请说明理由.(3)当∠1=1/n∠ABC,
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![如图,P是△ABC内一点,连结PB、PC(1)当∠1=1/2∠ABC,∠2=1/2∠ACB时你能说明∠P=90°+1/2∠A成立吗?(2)当∠1= 1/3∠ABC;∠2=1/3∠ACB时,猜猜看:∠P与∠A又是什么关系?请说明理由.(3)当∠1=1/n∠ABC,](/uploads/image/z/3634673-41-3.jpg?t=%E5%A6%82%E5%9B%BE%2CP%E6%98%AF%E2%96%B3ABC%E5%86%85%E4%B8%80%E7%82%B9%2C%E8%BF%9E%E7%BB%93PB%E3%80%81PC%EF%BC%881%EF%BC%89%E5%BD%93%E2%88%A01%3D1%2F2%E2%88%A0ABC%2C%E2%88%A02%3D1%2F2%E2%88%A0ACB%E6%97%B6%E4%BD%A0%E8%83%BD%E8%AF%B4%E6%98%8E%E2%88%A0P%3D90%C2%B0%2B1%2F2%E2%88%A0A%E6%88%90%E7%AB%8B%E5%90%97%3F%EF%BC%882%EF%BC%89%E5%BD%93%E2%88%A01%3D+1%2F3%E2%88%A0ABC%EF%BC%9B%E2%88%A02%3D1%2F3%E2%88%A0ACB%E6%97%B6%2C%E7%8C%9C%E7%8C%9C%E7%9C%8B%EF%BC%9A%E2%88%A0P%E4%B8%8E%E2%88%A0A%E5%8F%88%E6%98%AF%E4%BB%80%E4%B9%88%E5%85%B3%E7%B3%BB%3F%E8%AF%B7%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1.%EF%BC%883%EF%BC%89%E5%BD%93%E2%88%A01%3D1%2Fn%E2%88%A0ABC%2C)
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