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NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.1

NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Ex 5.1 Shapes are part of NCERT Solutions for Class 6 Maths. Here we have given NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.1.

  • Understanding Elementary Shapes Class 6 Ex 5.2
  • Understanding Elementary Shapes Class 6 Ex 5.3
  • Understanding Elementary Shapes Class 6 Ex 5.4
  • Understanding Elementary Shapes Class 6 Ex 5.5
  • Understanding Elementary Shapes Class 6 Ex 5.6
  • Understanding Elementary Shapes Class 6 Ex 5.7
  • Understanding Elementary Shapes Class 6 Ex 5.8
  • Understanding Elementary Shapes Class 6 Ex 5.9
Board CBSE
Textbook NCERT
Class Class 6
Subject Maths
Chapter Chapter 5
Chapter Name Understanding Elementary Shapes
Exercise  Ex 5.1
Number of Questions Solved 7
Category NCERT Solutions

NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes

Ex 5.1 Class 6 Maths Question 1.
What is the disadvantage in comparing line segments by mere observation?
Solution:
The disadvantage in comparing line segments by mere observation is the inaccuracy in judgement.

Ex 5.1 Class 6 Maths Question 2.
Why is it better to use a divider than a ruler, while measuring the length of a line segment?
Solution:
It is better to use a divider with ruler as it given an accurate measurement of the line segment.

Ex 5.1 Class 6 Maths Question 3.
Draw any line segment, say AB. Take any point C lying in between A and B. Measure the lengths of AB, BC and AC. Is AB = AC + CB?
[Note: If A, B, C are any three points on a line, such that AC + CB = AB, then we can be sure that C lies between A and B.]
Solution:
On measuring the lengths of line segments AB, BC and AC using ruler, we find
NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes 1
AB =6.5 cm,
CB = 4.2 cm,
and AC = 2.3 cm
Now, AC +CB = 2.3 cm +4.2 cm = 6.5 cm = AB
AB = AC+CB.

Ex 5.1 Class 6 Maths Question 4.
If A, B, C are three points on a line such that AB = 5 cm, BC = 3 cm and AC = 8 cm, which one of them lies between the other two?
Solution:
Since, AB + BC = 5 cm +3 cm = 8 cm = AC
∴ A, B, C are collinear and B lies between A and C.

Ex 5.1 Class 6 Maths Question 5.
Verify, whether D is the mid point of \(\overline { AG } \).
NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes 2
Solution:
Since AD = AB +BC + CD = 3 units
and, DG = DE +EF + FG = 3 units
∵ AD = DG [∵ Each = 3 units]
Thus, D is the mid-point of \(\overline { AG } \).

Ex 5.1 Class 6 Maths Question 6.
If B is the mid point of \(\overline { AC } \) and C is the mid point of \(\overline { BD } \), where A, B, C, D lie on a straight line, say why AB = CD?
Solution:
∵ B is the mid point of \(\overline { AC } \). Therefore, AB = BC.
∵ C is the mid-point of \(\overline { BD } \). Therefore, BC = CD.
Thus, AB =BC = CD i.e., AB = CD.

Ex 5.1 Class 6 Maths Question 7.
Draw five triangles and measure their sides. Check in each case, if the sum of the lengths of any two sides is always less than the third side.
Solution:
Draw any five triangles, T1, T2, T3, T4 and T5. label each one as ∆ ABC. Measure, in each case, the three sides a = BC, b = CA and c = AB.
NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes 3
Let us tabulate the measurements of sides as under:
NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes 4
From the above table, we find that
(i) each value of b + c – a is positive;
(ii) each value of c + a – b is positive;
(iii) each value of a + b – c is positive.
Now, b + c – a is positive ⇒ b + c – a > 0 ⇒ b + c > a
c + a – b is positive ⇒ c + a- b > 0 ⇒ c + a > b
a+ b – c is positive ⇒ a + b – c > 0 ⇒ a + b > c
Thus, it is verified that the sum of any two sides of a triangle is greater than the third side.
∴ The statement ‘the sum of two sides is ever less than the third side’ is never true.

We hope the NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.1 help you. If you have any query regarding NCERT Solutions for Class 6 Maths Chapter 5 Understanding Elementary Shapes Ex 5.1, drop a comment below and we will get back to you at the earliest.

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