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过抛物线y2=2px(p>0)的焦点F作直线交抛物线于A、B两点,O为抛物线的顶...
过抛物线y2=2px(p>0)的焦点F作直线交抛物线于A、B两点,O为抛物线的顶点.则△ABO是一个( )
A.等边三角形
B.直角三角形
C.不等边锐角三角形
D.钝角三角形
考点分析:
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