Exercise 4.1
Introduction - Basic Geometrical Ideas - Chapter 4 - Class 6th Maths
Q 1 - Ex 4.1 - Basic Geometrical Ideas - Chapter 4 - Class 6th NCERT Maths
Page No 74:
Question 1:
Use the figure to name:
(a) Five points
(b) A line
(c) Four rays
(d) Five line segments
Answer:
(a) The five points are D, E, O, B, and C.(b)
(c)
(d)
Question 2:
Name the line given in all possible (twelve) ways, choosing only two letters at a time from the four given.
Page No 75:
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)
(b)
(c)
(d)
, 
Question 4:
How many lines can pass through (a) one given point? (b) Two given points?Answer:
(a) Infinite number of lines can pass through a single 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 l contains E and F but not D.
(d)
and 
meet
at O.
Question 6:
Consider the following figure of line
.
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
.(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
is
same as ray
.(i) Ray
is
not opposite to ray.(j) O is not an initial point of
.(k) N is the 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
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