Trong không gian $Oxyz$ , cho bốn điểm $A\left(1;-2;0\right)$ , $B\left(1;0;-1\right)$ và $C\left(0;-1;2\right)$ , $D\left(0;m;k\right)$ . Hệ thức giữa $m$ và $k$ để bốn điểm $A,B,C,D$ đồng phẳng là

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose the word that has the underlined part pronounced differently from the rest:

  council                    couch                        couple                      counter

• Choose the word that has the underlined part pronounced differently from the rest:

  cow                  flower                  town                  know

• Choose a word that has different stress pattern:

  interesting                       direction                       knowledge                    narrow

• Choose a word that has different stress pattern:

  event                          current                       until                          convenient

• Choose the best answer for the following sentence:

  You will become ill __________ you don't stop working so hard.
  
  

• Choose the best answer for the following sentence:

  The brothers are so alike I cannot ____________ one from the other.
   

• Choose the best answer for the following sentence:

  Driving a car with faulty breaks is _________ quite a risk.
   

• Choose the best answer for the following sentence:

  She did the work _________ her own.
   

• Choose the best answer for the following sentence:

  __________ playing professional basketball, she also enjoys tennis.
   

• Choose one sentence that has the same meaning as the root one:

  "I saw her in the park two hours ago," said he.