北區模考多選第八題 (2014.03.06)

Author:
羅驥韡 (Pegasus Roe)
Topic:
Circle
如圖，∠B = 2∠C，設：，求：α, β
GeoGebra Applet
來源：北區模擬考多選第 8 題 (2014.03.06)

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