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Yes/No: 1 Mark
Reason: 1 Mark
Yes, they are mirror images of each other. The mirror image is the image formed by reflection of an object onthe mirror. If we try to overlap one arrow over the another then they will completely fit on one another.

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Visualisation: 1 Mark each
Diagram: 1 Mark each
(a) The following figure will have 6 distinct lines which will cut the figure into identical halves. Hence, lines of symmetry are 6.
Lines of symmetry

(b) The completed shape symmetric about the mirror line is shown below:

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(a) 1 Mark
(b) 2 Marks
(a) A kaleidoscope uses mirrors to produce images.

(b) Yes, the images formed can have several lines of symmetry. The number of lines of symmetry is determined by the angle between the mirrors.

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(a) 2 Marks
(b) 2 Marks
(a) In the given figure, one line of symmetry is possible as depicted in the image below. By folding the figure about this line it will overlap completely.

(b)Any line which divides a diagram into two equal halves is called a line of symmetry. This line of symmetry divides the figure into two identical halves. If a random diagram has 7 such lines, it will have 7 lines of symmetry.
The most basic figure that would have 7 lines of symmetry can be a regular heptagon with all 7 sides equal.

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How: 2Marks
Diagram: 1 Mark
There are two ways inwhich we can divide a rectangular field into two similar fields. The lines should pass through the midpoint of the two sides which are opposite to each other. Forrectangles, we have 2 lines of symmetry.

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Name: 1 Mark
Correct answer with diagram: 1 Mark
The given figure is an isosceles triangle where two sides are equal. We can have one line of symmetry for this triangle.It is shown below.

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Each point: 2 Marks
(a) The paper will get 4 such symmetrical droplets.

(b) The image about the mirror line is shown below:

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Each option: 2 Marks
(a) The asked diagram is a pentagon.

(b) A polygon with adjacent sides equal and perpendicular is a square. A square has4 lines of symmetry.

Answer: Option B. -> Line of symmetry
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B

When we are able to fold a picture in a half such that the left and right halves match exactly then we say that the picture has a line of symmetry.

Answer: Option D. -> Letter 'O'
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D

 The letter 'V' has only one line of symmetry.

 

Cricket bat has only one line of symmetry.

Letter 'T' also has one line of symmetry.

Letter 'O' also has two lines of symmetry.