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Q.

How many lines of symmetry are in this isosceles triangle?


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a

1

b

2

c

3

d

4 

answer is A.

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Detailed Solution

Line of symmetry is the line which divides a shape or the figure into the equal or symmetrical parts.
Question ImageIn an isosceles triangle the two sides of triangle are equal in measure.
Here, in a isosceles triangle there is only one line of symmetry. Let suppose a triangle PQR in which
PQ=PR
Question ImageHere, the line PU is the line of symmetry which divides triangle into two equal parts PUQ and PRU.
So, the correct answer is “Option 1”.
 
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