Constellation
Two people lie on a hill stargazing; one points out that any three stars determine a plane.
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Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-03-06-constellation/ (CC BY-NC 4.0)Transcript
A: "Look at that constellation!"
B: "What constellation?"
A: "Why, those three stars — they define a plane!"