Question

what are the ribs of umbrella

Answer 1

Most of the time, we break ourumbrellas along the ribs. These are the thin pieces of metal that are attached to the fabric and extend when a user unfurls the umbrella. In order to fold down to a manageable size, each ribhas three or four ligaments, or smaller sections that are jointed together by small pins.

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Answer 2

The ribs of umbrella are the tiny pipes that are attached to the cloth of the umbrella which helps in opening and closing it.