Basic Geometrical Ideas - Solutions
CBSE Class –VI Mathematics
NCERT Solutions
Chaper 4 Basic Geometrical Ideas (Ex. 4.1)
Question 1. Use the figure to name:
(a) Five points
(b) A line
(c) Four rays
(d) Five line segments
Answer: (a) Five points are: O, B, C, D, E
(b) A line:
(c) Four rays:
(d) Four line segments: ,
Question 2. Name the line given in all possible (twelve) ways, choosing only two letters at a time from the four given.
Answer:
Question 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.
Answer: (a) A line containing E = or
(b) A line passing through A = or
(c) A line on which O lies = or
(d) Two pairs of intersecting lines are : and ,
Question 4. How many lines can pass though:
(a) one given point?
(b) two given points
Answer: (a) Infinite number of lines can pass through one given point.
(b) Only one line can pass through two given points.
Question 5. Draw a rough figure and label suitably in each of the following cases:
(a) Point P lies on
(b) and intersect at M.
(c) Line contains E and F but not D.
(d) and meet at O.
Answer:
Question 6. Consider the following figure of line . Say whether following statements are true or false in the context of the given figure:
(a) Q, M, O, N, P are points on the line .
(b) M, O, N are points on a line segment .
(c) M and N are end points of line segment .
(d) O and N are end points of line segment .
(e) M is one of the end points of line segment .
(f) M is point on ray .
(g) Ray is different from ray .
(h) Ray same as ray .
(i) Ray is not opposite to ray .
(j) O is not an initial point of and .
Answer: (a) True, (b) True, (c) True, (d) False, (e) False, (f) False, (g) True, (h) False, (i) False, (j) False, (k) True