The On-Line Encyclopedia of Bongard Problems

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BP248

Dashed lines inside solid shape make an identical but slightly smaller shape, parallel to the one outside vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP243 BP244 BP245 BP246 BP247 * BP249 BP250 BP251 BP252 BP253`
	KEYWORD	`traditional`
	CONCEPT	`inside (info \| search),` `size (info \| search),` `similar_shape (info \| search),` `similar (info \| search),` `curve_texture (info \| search),` `texture (info \| search),` `parallel (info \| search)`
	AUTHOR	`Andreas Gunnarsson`

BP247

Five straight or curved lines vs. not five straight or curved lines.

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	CROSSREFS	`Adjacent-numbered pages: BP242 BP243 BP244 BP245 BP246 * BP248 BP249 BP250 BP251 BP252`
	KEYWORD	`traditional`
	CONCEPT	`curved_straight (info \| search),` `number (info \| search)`
	AUTHOR	`Andreas Gunnarsson`

BP246

Equal numbers of straight lines and continuous curves vs. unequal numbers of straight lines and continuous curves.

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	CROSSREFS	`Adjacent-numbered pages: BP241 BP242 BP243 BP244 BP245 * BP247 BP248 BP249 BP250 BP251`
	KEYWORD	`traditional`
	CONCEPT	`curved_straight (info \| search),` `number (info \| search)`
	AUTHOR	`Carla Rispoli`

BP245

Can be completed to be made into a rectangle vs. cannot be completed to be made into a rectangle.

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	CROSSREFS	`Adjacent-numbered pages: BP240 BP241 BP242 BP243 BP244 * BP246 BP247 BP248 BP249 BP250`
	KEYWORD	`traditional`
	CONCEPT	`imagined_line_or_curve (info \| search),` `imagined_entity (info \| search)`
	AUTHOR	`Carla Rispoli`

BP244

Scanning left-to-right, top-to-bottom, each filled box is separated from the next filled box by the same number of empty boxes vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP239 BP240 BP241 BP242 BP243 * BP245 BP246 BP247 BP248 BP249`
	KEYWORD	`left-finite, right-finite, traditional`
	CONCEPT	`all (info \| search),` `subtraction (info \| search),` `outlined_filled (info \| search),` `wrapping_around_bounding_box (info \| search),` `same_number (info \| search),` `same (info \| search),` `texture (info \| search)`
	AUTHOR	`Matthew J. Howells`

BP243

Triangle closer to box corner than any of the circles vs. not so.

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	CROSSREFS	`Adjacent-numbered pages: BP238 BP239 BP240 BP241 BP242 * BP244 BP245 BP246 BP247 BP248`
	KEYWORD	`notso, boundingbox, traditional, absoluteposition`
	CONCEPT	`bounding_box_corner (info \| search),` `length_line_or_curve (info \| search),` `near_far (info \| search),` `triangle (info \| search)`
	AUTHOR	`Matthew J. Howells`

BP242

Convex hull is a square vs. convex hull is not a square.

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	COMMENTS	`Additionally, the points in the examples on the left lie on the boundary of the square.` `EX2897 was originally on the right hand side, but it was removed because it seems to be an error.`
	CROSSREFS	`Adjacent-numbered pages: BP237 BP238 BP239 BP240 BP241 * BP243 BP244 BP245 BP246 BP247`
	KEYWORD	`noisy, traditional`
	CONCEPT	`convex_hull (info \| search),` `square (info \| search)`
	AUTHOR	`Matthew J. Howells`

BP241

Circumference shorter than length of everything else vs. circumference longer than length of everything else.

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	CROSSREFS	`Adjacent-numbered pages: BP236 BP237 BP238 BP239 BP240 * BP242 BP243 BP244 BP245 BP246`
	KEYWORD	`traditional`
	CONCEPT	`length_line_or_curve (info \| search)`
	AUTHOR	`Matthew J. Howells`

BP240

Straight line joining the curve ends does not cut the curve vs. straight line joining the curve ends intersects the curve.

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	CROSSREFS	`Adjacent-numbered pages: BP235 BP236 BP237 BP238 BP239 * BP241 BP242 BP243 BP244 BP245`
	KEYWORD	`traditional`
	CONCEPT	`x-crossing (info \| search),` `line_or_curve_endpoint (info \| search),` `imagined_line_or_curve (info \| search),` `imagined_entity (info \| search)`
	AUTHOR	`Matthew J. Howells`

BP239

Straight line parallel to line joining the ends of curve AND sliding the straight line suitably can make a closed area vs. straight line perpendicular to line joining the ends of curve.

(edit; present; nest [left/right]; search; history)

	CROSSREFS	`Adjacent-numbered pages: BP234 BP235 BP236 BP237 BP238 * BP240 BP241 BP242 BP243 BP244`
	KEYWORD	`traditional`
	CONCEPT	`line_or_curve_endpoint (info \| search),` `length_line_or_curve (info \| search),` `imagined_line_or_curve (info \| search),` `imagined_entity (info \| search),` `imagined_motion (info \| search),` `motion (info \| search),` `same_feature (info \| search),` `same (info \| search),` `parallel (info \| search),` `perpendicular (info \| search)`
	AUTHOR	`Harry E. Foundalis`

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