NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Exercise 4.1

NCERT Solutions for Class 6 Maths Chapter 4 Basic Geometrical Ideas Exercise 4.1

1. Use the figure to name :

(a) Five points

(b) A line

(c) Four rays

(d) Five line segments

Ans:

(a) Five Points are D, E, O, B and C

(b) DB is a line

(c) Four Rays are OC, OB, OD, ED

(d) Five line segments are DE, DO, DB, OE and EB

2. Name the line given in all possible (twelve) ways, choosing only two letters at a time from the four given.

Ans: All possible way of naming the given line are AB, AC, AD, BC, BD, CD, BA, CA, DA, CB, DB and DC
3. Use the figure to name :

(a) Line containing point E.

(b) Line passing through A.

(c) Line on which O lies

(d) Two pairs of intersecting lines.

Ans: 

(a) 

4. How many lines can pass through

(a) one given point?

(b) two given points?

5. Draw a rough figure and label suitably in each of the following cases:

(a) Point P lies on line segment AB.

(b) Line XY and line PQ intersect at M.

(c) Line l contains E and F but not D.

(d) Line OP and line OQ meet at O.

6. Consider the following figure of line MN. Say whether following statements are true or false in context of the given figure.

(a) Q, M, O, N, P are points on the line MN.

(b) M, O, N are points on a line segment MN.

(c) M and N are end points of line segment MN.

(d) O and N are end points of line segment OP.

(e) M is one of the end points of line segment QO.

(f) M is point on ray OP.

(g) Ray OP is different from ray QP.

(h) Ray OP is same as ray OM.

(i) Ray OM is not opposite to ray OP.

(j) O is not an initial point of ray OP.

(k) N is the initial point of ray NP and ray NM.