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Angle "The Giant"

Angle "The Giant"

- Posted in Math by

Another corrected answer on Brilliant.org. Angles DAB and BCD are very acute as their opposing side (BD) is the smallest (2). BDC is similarly acute, opposite the shorter of sides length 6 or 5 (BC).
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Folding Polygons into Pyramids 2

Folding Polygons into Pyramids 2

- Posted in Math by

Some corrections to a problem result in lengthy, ongoing discussions. On Brilliant.org, my original correction still raises the question "are we missing yet more 'smart' answers?" The Original
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Folding Polygons into Pyramids

Folding Polygons into Pyramids

- Posted in Math by

When I find incorrect answers in Brilliant.org, which is way more often than it should be for only one month of activity, I try to report the problem. Example: Which of the following regular polygons
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