如图,在△ABC中,∠CAB=70°.在同一平面内,将△ABC绕点A旋转到△A′B′C的位置,使得CC′∥AB,则∠BA

1个回答

  • 解题思路:

    A

    B

    //

    C

    C

    C

    AB

    =

    70

    0

    AC

    C

    =

    C

    AB

    =

    70

    0

    .

    A

    B

    C

    ABC

    绕点

    A

    旋转得到,

    ABC

    A

    B

    C

    .

    A

    C

    =

    A

    C

    .

    AC

    C

    =

    A

    C

    C

    =

    "

    70

    "

    C

    A

    C

    =

    180

    AC

    C

    A

    C

    C

    =

    "

    40

    .

    "

    BA

    B

    =

    40

    .

    故选C.

    C.