11D1 TWO PERPENDICULAR LINES

1. Which of the following words means “trùng nhau”?

                     

• A. coincide     

•      B. Perpendicular   

•        C. demonstrate

•     D. Direction

2. Which of the following words means  “chéo nhau”?

                                       

• A. coincide   

• B. Perpendicular    

• C. diagonal 

•      D. Direction

3. Which of the following words means  “giao tuyến”?

                                                      

• A. coincide  

• B. intersection    

•   C. Base

•     D. Direction

4. Which of the following options means “pyramid”?

                                                       

                                                               

• A. Tam giác  

•    B. Hình chóp        

• C. Tứ diện  

• D. Hình vuông    

5. Of the following statements, which statement is correct?

• A. If points A, B, C are 3 common points of 2 planes (P) and (Q), then A, B, C are collinear

• B. If A, B, C are collinear and (P), (Q) have A in common, then B and C are also two common points of (P) and (Q)

• C. If 3 points A,B,C are 3 common points of 2 distinct planes (P) and (Q), then A,B,C are not collinear

• D. If A,B,C are collinear and A,B are two common points of (P) and (Q), then C is also a common point of (P) and (Q)

6. Which of the following elements defines a single plane?

                                          

             

• A. Three points.   

• B. A point and a line.

• C. Two straight lines intersect.         

• D. Four points.

7. Given triangle ABC. How many planes can be determined that contain all the triangle vertices?

                                                                                                              

• A. 4.   

• B. 3.

•   C. 2.     

• D. 1.

8. Which of the following options means “space”?

                                                                   

                                                                   

• A. Không gian   

• B. Hình chóp     

• C. Đỉnh   

• D. Góc    

9. If three non – collinear lines intersect in pairs, then they

                                    

                                                

• A. Are concurrent    

•   B. Form a triangle

• C. Overlap     

• D. Are parallel to a plane

How many relative positions of two lines are there in space?

• A. 1

• B. 2

• C. 3

• D. 4