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\\November 22, 2023 4:45 PM Surender Prajapati Proof 5 Reader _________________________ Date: ___________________74

This symmetry is also known as line symmetry or mirror symmetry. And this line of symmetry
can be in any direction, horizontal, vertical, or slanting.

activity
Take a piece of paper and fold it in half into any direction, i.e., horizontally or
vertically. Spill few drops of ink on one half side of the paper.

Now, fold the paper along its crease which has been made by folding paper earlier and
press the halves together.
Unfold the paper and find two identical parts of an image formed by splitting ink’s drops
on both sides of crease. We can clearly observe that the figure formed is symmetric.

The crease or the line of fold is an example of line of symmetry.

Practice time 7A

1. Fill in the blanks.

(a) An isosceles triangle has ________ line of symmetry.

(b) A rectangle has ________ lines of symmetry.

(c) An equilateral triangle has ________ lines of symmetry.
(d) A circle has ________ lines of symmetry.

(e) A letter 'H' has ________ lines of symmetry.

2. draw the line(s) of symmetry for the following shapes.
(a) (b) (c)

(d) (e) (f)

152 Mathematics-5