Question

Give an example of a three-dimensional object that has rotational symmetry about a line.

Answer 1

Go to this link and read tip #1

http://www.mathexpression.com/rotation-symmetry.html

@_help_123

Answer 2

Thank you!

Answer 3

A three-dimensional shape has rotational symmetry when there is a line through the solid acting as an axis that the solid can rotate around to fit onto ... This is from this image. ;) Here is link:

https://www.google.com/search?tbs=sbi:AMhZZiu6FWiTQlNnODMwuShp6aQxAe1RfZ5yPu2oZQrxG5yk1awLKdA2wJ4-WVYlfjknLjTMhLS9O6qv2e0bScHy2sOZuRwaIjb3c2FxwoFhihkOqWAm-NvGXoTMx-boWhi7gl7OBNhTwJ4yvdL_11ZbOAYXV5hgM-4p_1lChcJnybgZ9IM_1dDmHE_1uaYZN0btcxh03l17sNNnNJB_11SiQWF7LIdShytmzQ4C1GzrdQmwlOqBtnv5k38MGkhb02l_1oRsDLJxIRvTGiq4trG4m9FNWNJqAeQdo--Y2OGBuRsb95AQ98CGTAxi6B0--2eFF6Lr2LYoHuxe07DBzo1D-eq5hdN9OvCjrnQ-BTWb8XxxxBv8fFKJV8HgZyJuRudEn9x7k-256C8XQn2FDvkiGmu7oU7SCJuakytln8iX7w0fT_1O8TjKsBeikyEe1tVfmREbPJRf0WWbpKSI1HR_1bcIeGt-IvuY0iGCikAA2ih0Am3iQ_14JB7ASNNFJ_1QGrVQ7eCFy-Nt-wQBsHbWziu6V-dJMeHioK7WLbxNIwwXKae-s3TE5x067exvzU3hiunkuiDePwWVoy60-BUg7r9eXLVOmvKwUIlD8jpsTaCipMNsWReTfBUjzDMMLzivSr6WPn3LKUu-cxpg15zbP-q6eWRHQPBEoCPjOIZI-xMKRoe68EvrhlUjf6Uht9JeqSxc_1LHTjSOdQmFfdPjdMmnbFWeCPbiaAv6uD4Gl_1rFSaTsRGuuD4SSnk4xVs0FtPuYSa4gQio1lT6MXqcLv6PxGFWieglOrf4_1g8txqwMFgr_1puCk5PJb7yxcnqCg80unzZvP-N0G0H1ym6fhzgmUPsEDhw6A8zKS7pJiTvlHC2YPpMKF_1hfab68VppMdLRmURQwxJHQbKJAOKVXUWCzLWXvqmg19kDG23sSX5o5uFU0PL8cKaD4v3QPLAcWrv9bEugsiNe3CNYF4xZv51PxlyDB7E-rNFAuMXnhUFNdKEU0Xyt6P8SSRKIL0DgzbYCLpa9TYn-LaPDoO28JXbdu6X9xEd8941PnCVrCsTv1NDVpwtPUEuFy8NOrS-Yc&btnG=Search%20by%20image&hl=en