Question
Classify the curves as
$i.\ $Open or
$ii.\ $Closed.
$i.\ $Open or
$ii.\ $Closed.
✓
Answer
Following figure shows angles with one ray in common:
$\angle EOB$ and $\angle BOA$ has one common ray i.e. $OB$.
$\angle EOB$ and $\angle BOA$ has one common ray i.e. $OB$.
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