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Question

Identify closed curve.
636724_3aa086ce3b1a430b9cff851c1516ccf9.png

A
1,2
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B
1,3
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C
2,4
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D
3,4
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Solution

The correct option is D 1,3

We know that an open curve has two endpoints and a curve that begins and ends at the same point is called a closed curve.
Thus according to the definition, the curve 1,3 is only a closed figure.

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