圆的两弦AB,CD相交于点P∠AQC=36°∠APC=80°求∠ADC、∠BCD度数圆的两弦AB,CD相交于点P(非圆心),AD、CB的延长线相交圆外一点Q.∠AQC=36°∠APC=80°求∠ADC、∠BCD度数.
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![圆的两弦AB,CD相交于点P∠AQC=36°∠APC=80°求∠ADC、∠BCD度数圆的两弦AB,CD相交于点P(非圆心),AD、CB的延长线相交圆外一点Q.∠AQC=36°∠APC=80°求∠ADC、∠BCD度数.](/uploads/image/z/14093531-35-1.jpg?t=%E5%9C%86%E7%9A%84%E4%B8%A4%E5%BC%A6AB%2CCD%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9P%E2%88%A0AQC%3D36%C2%B0%E2%88%A0APC%3D80%C2%B0%E6%B1%82%E2%88%A0ADC%E3%80%81%E2%88%A0BCD%E5%BA%A6%E6%95%B0%E5%9C%86%E7%9A%84%E4%B8%A4%E5%BC%A6AB%2CCD%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9P%EF%BC%88%E9%9D%9E%E5%9C%86%E5%BF%83%EF%BC%89%2CAD%E3%80%81CB%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E7%9B%B8%E4%BA%A4%E5%9C%86%E5%A4%96%E4%B8%80%E7%82%B9Q.%E2%88%A0AQC%3D36%C2%B0%E2%88%A0APC%3D80%C2%B0%E6%B1%82%E2%88%A0ADC%E3%80%81%E2%88%A0BCD%E5%BA%A6%E6%95%B0.)
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圆的两弦AB,CD相交于点P∠AQC=36°∠APC=80°求∠ADC、∠BCD度数圆的两弦AB,CD相交于点P(非圆心),AD、CB的延长线相交圆外一点Q.∠AQC=36°∠APC=80°求∠ADC、∠BCD度数.
圆的两弦AB,CD相交于点P∠AQC=36°∠APC=80°求∠ADC、∠BCD度数
圆的两弦AB,CD相交于点P(非圆心),AD、CB的延长线相交圆外一点Q.∠AQC=36°∠APC=80°求∠ADC、∠BCD度数.
圆的两弦AB,CD相交于点P∠AQC=36°∠APC=80°求∠ADC、∠BCD度数圆的两弦AB,CD相交于点P(非圆心),AD、CB的延长线相交圆外一点Q.∠AQC=36°∠APC=80°求∠ADC、∠BCD度数.
∠D=∠B
∠QCD=∠B+∠CPB=100+∠B=100+∠D
∠Q+∠QCD+∠D=180
∠Q+100+∠D+∠D=180
∠D=22°
、∠BCD=36+22=58°