# CBSE NCERT Solutions for Class 6 Chapter 4

Students get step-by-step explanation to every question specified in the textbooks. These NCERT solutions can also prove to be of valuable help to students in their assignments and preparation of boards and competitive exams. It also provides important points to remember after every chapter with the complete summary, important Math formulas and well-illustrated examples covering all the topics in the textbooks.

CBSE NCERT Solutions for Class 6 Maths Chapter 4:

Question-1:

Investigate: Use strip and fasteners to make a triangle and a quadrilateral.
Try to push inward at any one vertex of the triangle. Do the same to the quadrilateral. Is the triangle distorted? Is the quadrilateral distorted? Is the triangle rigid?
Why is it that structures like electric towers make use of triangular shapes and not quadrilateral?

Solution:

No, the triangle is not distorted but the quadrilateral is distorted and also the triangle is rigid.
Structures like electric towers make use of triangular shape so that they could not be distorted and they could be rigid.

Question-2:

Consider the following figure of line MN. 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 \overline{ MN} .
(b) M, O, N are points on a line segment \overline {MN }.
(c) M and N are end points of line segment \overline {MN} .
(d) O and N are end points of line segment \overline {OP }.
(e) M is one of the end points of line segment \overline {QO }.
(f) M is point on ray OP.
(g) Ray OP is different from ray OP.
(h) Ray OP same as ray OM.
(i) Ray OM is not opposite to ray OP.
(j) O is not an initial point of NP and NM.

Solution:

(a) True
(b) True
(c) True
(d) False
(e) False
(f) False
(g) True
(h) False
(i) False
(j) False
(k) False

Question-3:

(a) Is every diameter of a circle also a chord?
(b) Is every chord of a circle also a diameter?

Solution:

(a) Yes, every diameter of a circle is also a chord.
(b) No, every chord of a circle is not a diameter.