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Q.

What is the number of lines of symmetry in an equilateral triangle?

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a

0

b

1

c

2

d

3

answer is D.

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Detailed Solution

We have given an equilateral triangle.
We know that a line of symmetry could be a line that cuts a shape exactly in half.
An equilateral triangle is symmetric about each and every of the bisectors of its interior angle. Also, it has three bisectors.
Question Image

Question Image

Therefore there are three lines of symmetry in an equilateral triangle.
Hence option (4) is the correct option.

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