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CBSE Questions for Class 6 Maths Symmetry Quiz 3 - MCQExams.com
CBSE
Class 6 Maths
Symmetry
Quiz 3
The number of lines of symmetry in a $$ 30^{\circ}$$-$$60^{\circ}$$-$$90^{\circ} $$ set square is
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0%
0
0%
1
0%
2
0%
3
Explanation
The number of lines of symmetry in a $$ 30^{\circ}$$-$$60^{\circ}$$-$$90^{\circ} $$ set square is zero because it has shape of an scalene right-angled triangle
Hence, option A is the right answer.
The number of lines of symmetry in a trapezium is
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0%
Infinite
0%
$$2$$
0%
$$3$$
0%
None
Explanation
In a trapezium, the nonparallel sides need not be equal. Hence, it has no lines of symmetry.
Which of the following triangle has no lines of symmetry?
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an equilateral triangle
0%
an isosceles triangle
0%
a scalene triangle
0%
all of the above
Explanation
A
scalene triangle
is a
triangle
that has three unequal sides and hence it has no line of symmetry.
The figure having exactly two lines of symmetry in the following is_________
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0%
0%
0%
None of these
Explanation
Hence, $$Op-C$$ is correct.
The number of lines of symmetry that the given square has is
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$$4$$
0%
$$2$$
0%
$$3$$
0%
$$1$$
Explanation
Square have 4 lines of symmetry.
The number
of lines of symmetry in a square is
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$$4$$
0%
$$3$$
0%
$$2$$
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Infinite
Explanation
A square is symmetric about each of the diagonals and the perpendicular bisectors of the opposite
sides.
Hence, it has $$4$$ lines of symmetry.
Which of the following letters does not have the vertical line of symmetry?
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M
0%
H
0%
E
0%
V
Explanation
A H M T U V W Y have vertical line of symmetry.
Hence option C is answer.
Which of the following alphabet has no lines of symmetry?
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A
0%
B
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Q
0%
O
Explanation
Q neither have horizontal line of symmetry not it has vertical line of symmetry.
If a triangle has $$3$$ lines of symmetry, then it is:
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Isosceles
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Right-angles
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Equilateral
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Obtuse angled
Explanation
In an equilateral triangle, the three angle bisectors of the three angles are the lines of symmetry. Thus it has three lines of symmetry.
The number of lines of symmetry in a protractor is
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0
0%
1
0%
2
0%
More than 2
Explanation
A protractor is a semicircle and a semicircle has 1 line symmetry.
Which of the following figures has only one line of symmetry?
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0%
0%
0%
Explanation
Figure B has one line of symmetry passing vertically through its centre
Write all the capital letters of the English alphabets which have two lines of symmetry.
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H, I and X
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A,C and B
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P,Q and R
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S,Y and Z
Explanation
Letter H,I and X has two line of symmetry.
Which letter has line of symmetry?
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$$A$$
0%
$$B$$
0%
$$C$$
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$$D$$
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All of the above
Explanation
A line of symmetry is a line that divides a figure into two corresponding parts, each of which is the mirror image of the other.
All Letters $$A, B, C, D$$ have a line of symmetry, when we cut the letters $$A, B, C, D$$ from the middle, it divides it into $$2$$ equal parts and both the parts are a mirror image of each other.
Hence, option $$E$$ is correct.
How many lines of symmetry does this octagon have?
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$$4$$
0%
$$6$$
0%
$$8$$
0%
$$10$$
Explanation
It has 4 lines of symmetry. ( one vertically, one horizontally, two diagonally)
(This is NOT a regular octagon; otherwise there would be another 4 lines of symmetry passing through the opposite corners)
The number of lines of symmetry in a kite is
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$$0$$
0%
$$1$$
0%
$$2$$
0%
$$3$$
Explanation
A kite, which is a quadrilateral with two different pairs of adjacent sides that are equal in length, has only one line of symmetry.
Hence, option B is correct.
How many lines of symmetry does this tessellation have?
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6
0%
2
0%
4
0%
1
Explanation
Line of symmetry divides a figure into two equal parts.
The given tessellation has $$6$$ lines of symmetry, as shown in the figure above.
Write the letters of the word 'MATHEMATICS' which have no line of symmetry.
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S
0%
M
0%
E
0%
Y
Explanation
Letter 'S' in the word 'MATHEATICS' has no line symmetry.
Which of the lines in the picture are lines of symmetry of the given figure?
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q and s
0%
Only r
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r and t
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q, r, s and t
Explanation
If you can reflect (or flip) a figure over a lime
and the figure appears unchanged, then the figure has reflection
symmetry
or
line symmetry
. The
line
that you reflect over is called the
line of symmetry
. A
line of symmetry
divides a figure into two mirror-image halves.
Then r and t are line of symmetry
Which of the lines in the picture are lines of symmetry of the figure?
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0%
l, m and o
0%
l and n
0%
l, m, n and o
0%
m and o
Explanation
If you can reflect (or flip) a figure over a lime
and the figure appears unchanged, then the figure has reflection
symmetry
or
line symmetry
. The
line
that you reflect over is called the
line of symmetry
. A
line of symmetry
divides a figure into two mirror-image halves.
In the given figure, lines $$l$$ and $$n$$ divide figure into two mirror-image halves.
Hence, they are lines of symmetries.
Which of the lines in the picture are lines of symmetry of the figure?
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0%
Only $$l$$
0%
No reflection symmetry
0%
Only $$m$$
0%
$$l$$ and $$n$$
Explanation
If you can reflect a figure over a line and the figure appears unchanged, then the figure has reflection symmetry or line of symmetry. The line that you reflect over is called line of symmetry. A line of symmetry divides figure into two mirror images.
So, in the given figure none of the lines $$l,\ m$$ or $$n$$ shows above mentioned properties.
The lines of symmetry of the given figure is/are
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$$0$$
0%
$$1$$
0%
$$2$$
0%
$$3$$
Explanation
As shown in the figure, option B is correct.
Identify the line(s) of symmetry for the given figure.
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0%
0%
0%
Explanation
From the give figures, option A is correct.
What is the smallest number of squares that must be shaded so that the figure has a line of symmetry?
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$$1$$
0%
$$3$$
0%
$$5$$
0%
$$7$$
Explanation
Line of symmetry is defined as it divides the figure into two equal mirror halves.
Therefore total $$3$$ squares must be shaded so that the figure has a line of symmetry along its diagonal.
Hence the correct answer is option B.
Which of the following dotted lines is a line of symmetry?
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L
0%
M
0%
N
0%
None of these
Explanation
The line of symmetry divides the figure into two equal mirror halves.
$$\therefore$$ only dotted line N satisfies the above condition
Hence the correct answer is option C
What is the least number of squares that must be added, so that the line AB becomes a line of symmetry?
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$$1$$
0%
$$2$$
0%
$$3$$
0%
$$4$$
Explanation
Line of symmetry is defined as it divides the figure into two equal mirror halves.
So from the above figure minimum $$2$$ squares should be added so that line AB becomes a line of symmetry.
Hence the correct answer is option B
Which of the following is a line of symmetry of the figure?
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$$L$$ and $$O$$
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$$L$$ and $$N$$
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$$N$$
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All $$L,\; M,\; N$$ and $$O$$
Explanation
A line of symmetry is defined as the line which divides the figure into two equal mirror images
Hence from the above figure line $$L$$, line $$M$$, line $$N$$, line $$O$$ are the lines of symmetry.
Hence, the correct answer is option $$D$$.
In the given figure, which of the following is a line of symmetry?
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Line B only
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Line A and B
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Line C
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Line A and C
Explanation
There is only one line of symmetry because Line B divide by figure into two parts equally.
Line B is a line of symmetry.
Complete the given figure on the basis of two lines of symmetry.
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0%
0%
0%
Explanation
From the given figures, option A is correct.
The number of lines of symmetry in an unsharpened pencil is/are
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$$0$$
0%
$$1$$
0%
$$2$$
0%
$$3$$
Explanation
As shown in the figure, there are 2 lines of symmetry.
Hence, option C is correct.
Which of the following figures has a line of symmetry ?
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0%
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