Does A = ½bh Apply?
A student puzzles over an obtuse triangle whose height falls outside the triangle.
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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/2015-01-01-does-a-bh-apply/ (CC BY-NC 4.0)Transcript
[Prompt] "Does the formula 'A = ½bh' apply here? Why/Why not?"
[Obtuse triangle, base 8cm, height 5cm drawn outside the triangle]
Student: "Hmm…"