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# NCERT Solutions (Part - 1) - Basic Geometrical Ideas Class 6 Notes | EduRev

## Mathematics (Maths) Class 6

Created by: Praveen Kumar

## Class 6 : NCERT Solutions (Part - 1) - Basic Geometrical Ideas Class 6 Notes | EduRev

The document NCERT Solutions (Part - 1) - Basic Geometrical Ideas Class 6 Notes | EduRev is a part of the Class 6 Course Mathematics (Maths) Class 6.
All you need of Class 6 at this link: Class 6

Exercise 4.1
Ques 1: Use the figure to name: (a) Five points
(b) A line
(c) Four rays
(d) Five line segments
Ans:

 (a) Five points are: O, B, C, D, E (b) A line: (c) Four rays: (d) Four line segments: Ques 2: Name the line given in all possible (twelve) ways, choosing only two letters at a time from the four given. Ans:  Ques 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) A line containing (b) A line passing through (c) A line on which O lies (d) Two pairs of intersecting lines are Ques 4: How many lines can pass through
(a) one given point?
(b) Two given points?
Ans: (a) Infinite number of lines can pass through one given point. (b) Only one line can pass through two given points. Ques 5: Draw a rough figure and label suitably in each of the following cases:
(a) Point P lies on .
(b) intersect at M.
(c) Line contains E and F but not D.
(d) meet at O.
Ans:    Ques 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 Ans: (a) True
(b) True
(c) True
(d) False
(e) False
(f) False
(g) True
(h) False
(i) False
(j) False

Exercise 4.2
Ques 1: Classify the following curves as (i) Open or (ii) Closed.     Ans: (a) Open curve
(b) Closed curve
(c) Open curve
(d) Closed curve
(e) Closed curve

Ques 2: Draw rough diagrams to illustrate the following:
(a) Open curve
(b) Closed curve.
Ans: (a) Open curves    (b) Closed curves    Ques 3: Draw any polygon and shade its interior.
Ans: Polygon ABCDE Ques 4: Consider the given figure and answer the questions:
(a) Is it a curve?
(b) Is it closed? Ans: (a) Yes, it is a curve.
(b) Yes, it is closed.

Ques 5: Illustrate, if possible, each one of the following with a rough diagram:
(a) A closed curve that is not a polygon.
(b) An open curve made up entirely of line segments.
(c) A polygon with two sides.
Ans:
(a) (b) (c) Polygon with two sides cannot be draw.

Exercise 4.3
Ques 1: Name the angles in the given figure. Ans: There are four angles in given figure:
∠ ABC, ∠ CDA, ∠ DAB, ∠ DCB

Ques 2: In the given diagram, name the point (s) (a) In the interior of ∠DOE
(b) In the exterior of ∠EOF
(c) On ∠EOF
Ans: (a) Point interior of ∠DOE : A
(b) Points exterior of ∠EOF: C, A, D
(c) Points on ∠EOF: E, O, B, F

Ques 3: Draw rough diagrams of two angles such that they have
(a) One point in common.
(b) Two points in common.
(c) Three points in common.
(d) Four points in common.
(e) One ray in common.
Ans: (a) (b) (c) (d) (e) ## Mathematics (Maths) Class 6

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