How can you draw a figure without lifting Pen

Vertex having odd number of edges coming to it define if a figure can be drawn without lifting Pen
#maths

[@tanushreebishoi]

Thank you so much

[@vaibhavshukla1780]

Super concept, make more video like that

[@Eureka-11]

Thanks for the same. .

[@tanushreebishoi]

Sirf hume hi pta hai ki humne pen uthaya hai ya nahi , toh itna dimaag kyu lagau ??
Ho hi nahi raha waise bhi