(本小题10分)如图,在正方形网格图中建立一直角坐标系,一条圆弧经过网格点A(0,2),B(4,2)C(6,0),解答下

1个回答

  • 解题思路:

    (1)

    D

    点坐标为

    (2,

    2)(3

    )

    (2)解:

    :

    所以,

    D

    的半径为

    (3

    )

    (3)解:

    ADC

    =

    90

    (2

    )

    (2

    )

    (3

    )

    解:

    ADC

    =

    90

    (2

    )

    S

    =

    (2

    )

    (1)D点坐标为(2,-2)

    (2)

    (3)S=

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