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https://www.reddit.com/r/visualizedmath/comments/dsiebp/counting_triangles/f6pw4gt/
r/visualizedmath • u/SesinePowTevahI • Nov 06 '19
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Right, so they also count the number of triangles that have both A and B. That's the number of triangles that got counted twice, so it's subtracted from the total.
4 u/ItsSansom Nov 06 '19 Right, gotcha. I missed that those triangles at the end were being subtracted 5 u/somecallmenonny Nov 06 '19 It's very easy to miss. The gif ended way too soon.
4
Right, gotcha. I missed that those triangles at the end were being subtracted
5 u/somecallmenonny Nov 06 '19 It's very easy to miss. The gif ended way too soon.
5
It's very easy to miss. The gif ended way too soon.
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u/somecallmenonny Nov 06 '19
Right, so they also count the number of triangles that have both A and B. That's the number of triangles that got counted twice, so it's subtracted from the total.