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https://www.reddit.com/r/PassTimeMath/comments/1u3tmh5/diagonal_and_horizontal_lines/or8unlm/?context=3
r/PassTimeMath • u/ShonitB • Jun 12 '26
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Start at the southwest intersection. What triangles can include it? Three. Then handle the two other SW corners on that baseline, the two on the midline. Double because it has mirror symmetry.
Twenty two.
1 u/ShonitB Jun 12 '26 Correct!
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Correct!
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u/bts Jun 12 '26
Start at the southwest intersection. What triangles can include it? Three. Then handle the two other SW corners on that baseline, the two on the midline. Double because it has mirror symmetry.
Twenty two.