RD Sharma Solutions: Symmetry (Exercise 17.3)

# Symmetry (Exercise 17.3) RD Sharma Solutions | Mathematics (Maths) Class 6 PDF Download

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Q u e s t i o n : 6
Complete the following table:

Shapes Rough Figure Number of lines of symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

iv
Rectangle

v
Square

vi
Parallelogram

vii
Rhombus

viii
Line

ix
Line segment

x
Angle

xi
Isosceles trepezium

xii
Kite

xiii
Arrow-head

xiv
Semi-circle

xv
Circle

xvi
Regular pentagon

xvii
Regular hexagon

S o l u t i o n :

Shapes Rough Figure
Number of lines of
symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
Page 2

Q u e s t i o n : 6
Complete the following table:

Shapes Rough Figure Number of lines of symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

iv
Rectangle

v
Square

vi
Parallelogram

vii
Rhombus

viii
Line

ix
Line segment

x
Angle

xi
Isosceles trepezium

xii
Kite

xiii
Arrow-head

xiv
Semi-circle

xv
Circle

xvi
Regular pentagon

xvii
Regular hexagon

S o l u t i o n :

Shapes Rough Figure
Number of lines of
symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

3
iv
Rectangle
2
v
Square

4
vi
Parallelogram

0
vii
Rhombus

2
viii
Line

Infinitely many
ix
Line segment

1
x
Angle
1
xi
Isosceles trapezium

1
Page 3

Q u e s t i o n : 6
Complete the following table:

Shapes Rough Figure Number of lines of symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

iv
Rectangle

v
Square

vi
Parallelogram

vii
Rhombus

viii
Line

ix
Line segment

x
Angle

xi
Isosceles trepezium

xii
Kite

xiii
Arrow-head

xiv
Semi-circle

xv
Circle

xvi
Regular pentagon

xvii
Regular hexagon

S o l u t i o n :

Shapes Rough Figure
Number of lines of
symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

3
iv
Rectangle
2
v
Square

4
vi
Parallelogram

0
vii
Rhombus

2
viii
Line

Infinitely many
ix
Line segment

1
x
Angle
1
xi
Isosceles trapezium

1
xii
Kite
1
xiii
Arrow-head

1
xiv
Semi-circle

1
xv
Circle

Infinitely many
xvi
Regular pentagon
5
xvii
Regular hexagon
6

Page 4

Q u e s t i o n : 6
Complete the following table:

Shapes Rough Figure Number of lines of symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

iv
Rectangle

v
Square

vi
Parallelogram

vii
Rhombus

viii
Line

ix
Line segment

x
Angle

xi
Isosceles trepezium

xii
Kite

xiii
Arrow-head

xiv
Semi-circle

xv
Circle

xvi
Regular pentagon

xvii
Regular hexagon

S o l u t i o n :

Shapes Rough Figure
Number of lines of
symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

3
iv
Rectangle
2
v
Square

4
vi
Parallelogram

0
vii
Rhombus

2
viii
Line

Infinitely many
ix
Line segment

1
x
Angle
1
xi
Isosceles trapezium

1
xii
Kite
1
xiii
Arrow-head

1
xiv
Semi-circle

1
xv
Circle

Infinitely many
xvi
Regular pentagon
5
xvii
Regular hexagon
6

Q u e s t i o n : 7
Consider the English alphabets A to Z. List among them the letters which have
i
vertical line of symmetry. likeA
ii
horizontal lines of symmetry. likeB
iii
vertical and horizontal lines of symmetry. likeI
iv
no line of symmetry. likeQ
S o l u t i o n :
i

ii

iii
Page 5

Q u e s t i o n : 6
Complete the following table:

Shapes Rough Figure Number of lines of symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

iv
Rectangle

v
Square

vi
Parallelogram

vii
Rhombus

viii
Line

ix
Line segment

x
Angle

xi
Isosceles trepezium

xii
Kite

xiii
Arrow-head

xiv
Semi-circle

xv
Circle

xvi
Regular pentagon

xvii
Regular hexagon

S o l u t i o n :

Shapes Rough Figure
Number of lines of
symmetry
i
Scalene triangle
0
ii
Isosceles triangle
1
iii
Equilateral triangle

3
iv
Rectangle
2
v
Square

4
vi
Parallelogram

0
vii
Rhombus

2
viii
Line

Infinitely many
ix
Line segment

1
x
Angle
1
xi
Isosceles trapezium

1
xii
Kite
1
xiii
Arrow-head

1
xiv
Semi-circle

1
xv
Circle

Infinitely many
xvi
Regular pentagon
5
xvii
Regular hexagon
6

Q u e s t i o n : 7
Consider the English alphabets A to Z. List among them the letters which have
i
vertical line of symmetry. likeA
ii
horizontal lines of symmetry. likeB
iii
vertical and horizontal lines of symmetry. likeI
iv
no line of symmetry. likeQ
S o l u t i o n :
i

ii

iii

iv

Q u e s t i o n : 8
Can you draw a triangle having:
i
exactly one line of symmetry.
ii
exactly two lines of symmetry.
iii
three lines of symmetry.
iv
no line of symmetry.
S o l u t i o n :
i
Yes; isosceles triangle

ii
No
iii
Yes; equilateral triangle
iv
```

## Mathematics (Maths) Class 6

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## Mathematics (Maths) Class 6

94 videos|347 docs|54 tests

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