Exercise 4.3

Exercise 4.3

1. Observe the diagram and fill in the blanks.

(i) ‘A’, ‘O’ and ‘B’ are Collinear points.

(ii) ‘A’, ‘O’ and ‘C’ are Non−collinear points.

(iii) ‘A’, ‘B’ and ‘C’ are non−collinear points.

(iv) O is the point of concurrency.

2. Draw any line and mark any 3 points that are collinear.

Answer:

3. Draw any line and mark any 4 points that are not collinear.

Answer:

4. Draw any 3 lines to have a point of concurrency.

Answer:

5. Draw any 3 lines that are not concurrent. Find the number of points of intersection.

Answer:

Objective Type Questions

6. A set of collinear points in the figure are _________.

(a) A, B, C

(b) A, F, C

(c) B, C, D

(d) A, C, D

Answer: (b) A, F, C

7. A set of non-collinear points in the figure are _________.

(a) A, F, C

(b) B, F, D

(c) E, F, G

(d) A, D, C

Answer: (d) A, D, C

8. A point of concurrency in the figure is _________.

(a) E

(b) F

(c) G

(d) H

Answer: (b) F

Answers:

Exercise 4.3

1) i) Collinear ii) Non-Collinear iii) Non-Collinear iv) °

2) 

3) 

4) 

5) 

Objective Type Questions

6) b) AFC

7) d) A, D, C

8) b) F