CHO HÌNH LẬP PHƯƠNG ABCD A B C D

Câu 22: Cho hình lập phương

ABCD A B C D

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^{1 1 1}

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. Gọi O là tâm của hình lập phương. Chọn đẳng thức

đúng?

A.

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^AO

^

¹

₃

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^

^

^

^

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^{AB AD AA}

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^

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^

¹

B.

^

^AO

^

¹

₂

^{  }

^{AB AD AA}

^

^

¹

C.

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^

^

^

^

^

^

^

^

^

^

^AO

^

¹

₄

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^{AB AD AA}

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

^

¹

D.

^

^AO

^

²

₃

^{  }

^{AB AD AA}

^

^

¹