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4\$\begingroup\$ Related: count the number of triangles \$\endgroup\$Kevin Cruijssen– Kevin Cruijssen2020-02-12 07:29:44 +00:00Commented Feb 12, 2020 at 7:29
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8\$\begingroup\$ You ask: "is this a triangle?" Probably not, but who knows. Is anything really a triangle? \$\endgroup\$lyxal– lyxal ♦2020-02-12 09:47:12 +00:00Commented Feb 12, 2020 at 9:47
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4\$\begingroup\$ @Lyxal I say you can be anything. I believe in you. Do you? \$\endgroup\$RGS– RGS2020-02-12 13:14:10 +00:00Commented Feb 12, 2020 at 13:14
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10\$\begingroup\$ △ △ ▽ ▽ ◁ ▷ ◁ ▷ A B ␂ \$\endgroup\$S.S. Anne– S.S. Anne2020-02-12 15:19:14 +00:00Commented Feb 12, 2020 at 15:19
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2\$\begingroup\$ you should at least admit that your test-cases 1,2,3 are "borderline triangles" as the shorter sides summed give the longest side so you have a "triangle on a line" - while 100,10,10 definitely is false as 10+10 is shorter than 100 \$\endgroup\$eagle275– eagle2752020-02-13 07:33:23 +00:00Commented Feb 13, 2020 at 7:33
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