As designers we're supposed to be good with geometry, so let's see if you can figure this out. From puzzle designer Jin-hoo Ahn comes this three-piece one called "Bitten Biscuits," which won a Jury Honorable Mention at the IPP Design Competition (International Puzzle Party) in Kyoto, Japan in 2016:

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The idea is that you can arrange these three pieces in such a way as to create a symmetrical shape. (Actually there are two possible symmetrical shapes.) Do you think you can do it?

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Obviously you could trace the images above using software and play with them that way. But if you'd like to support Ahn's work, the puzzles are for sale here ($10 for the acrylic version, $17 for wood).

If you can't figure it out, a YouTube puzzle channel (is there anything that doesn't have a channel on YouTube) breaks it down for you below: