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Introduction to Curves

Question

Identify closed curve.

$1$ only
$3$ only
$1 a n d 2$ only
$2$ only

A

1

only

B

3

only

C

2

only

D

1 a n d 2

only

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Solution

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A curve which begins and ends at the same point is called a closed curve.
Figure $1, 2$ are open figures and $3$ is a closed figure.

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