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5 years, 1 month ago
This was insprired by
This follows the rules of a classic Bongard puzzle: find the rule that all shapes on the left follow, but none of the shapes on the right do.
To make my intention clearer, here are more examples:
Assume that the third example on the left is perfectly circular outside of the two missing wedges.
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Apr 26, 2018 at 0:30
Austin Weaver Austin Weaver
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All the shapes on the left have two or less outward facing corners, but every shape on the right has more than two outward facing corners.
Apr 26, 2018 at 3:09
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This is a little tenuous, but here goes...
Imagine each shape edge is a string, and each vertex is a hole. Then
attempt to pull each string taut. Straight edges will remain the same, but curved edges will shrink until they become straight.
Then, the shapes on the left will no longer be closed shapes (either becoming points or lines). The shapes on the right remain as closed shapes.
The contentious one is the pac-man shape (left panel #2/top-right). Perhaps when pulled taut, the string follows the contour of the two existing straight lines, therefore producing a caret (not a closed shape) instead of a triangle (if you were to simply connect the vertices by straight lines). The top-left shape is also contentious; if the three vertices are not collinear, you get a closed triangle upon pulling the strings taut.
Apr 26, 2018 at 6:23
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All the left ones have only axis of symmetry, whereas on the right they have more than one axis of symmetry.
Apr 26, 2018 at 2:32
Mea Culpa Nay Mea Culpa Nay
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All shapes on the right were modified from an ellipsoid, which were pinched, fused or cut. The ones on the left evolve from a variety of shapes
Apr 26, 2018 at 8:19
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Every shape on the left can be stretched into a circle, but those on the right cannot.
May 3, 2018 at 10:30
All of the shapes on the Left have a vertical line to their right, while none of the shapes on the Right do.
A stretch until I can think of another answer.
Apr 26, 2018 at 15:36
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