The On-Line Encyclopedia of Bongard Problems

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Axis of symmetry vs. no axis of symmetry.

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	CROSSREFS	`Adjacent-numbered pages: BP260 BP261 BP262 BP263 BP264 * BP266 BP267 BP268 BP269 BP270`
	CONCEPT	`symmetry_axis (info \| search),` `symmetry (info \| search)`
	WORLD	`arial_font_centered_connected_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

Odd number of straight line segments vs. even number of straight line segments.

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	CROSSREFS	`Adjacent-numbered pages: BP262 BP263 BP264 BP265 BP266 * BP268 BP269 BP270 BP271 BP272`
	CONCEPT	`even_odd (info \| search)`
	WORLD	`arial_font_centered_connected_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

Center of symmetry vs. no center of symmetry.

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	CROSSREFS	`Adjacent-numbered pages: BP264 BP265 BP266 BP267 BP268 * BP270 BP271 BP272 BP273 BP274`
	CONCEPT	`symmetry (info \| search)`
	WORLD	`arial_font_centered_connected_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

Can be hand-written without raising the pen vs. cannot be hand-written without raising the pen.

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	CROSSREFS	`Adjacent-numbered pages: BP266 BP267 BP268 BP269 BP270 * BP272 BP273 BP274 BP275 BP276`
	CONCEPT	`write_in_single_stroke (info \| search)`
	WORLD	`arial_font_centered_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

Convex hull is a triangle vs. convex hull is a quadrilateral.

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	COMMENTS	`Note: Thickness of letters is to be disregarded. If the font is paid attention to, the solution does not work. - Aaron David Fairbanks, Dec 01 2021`
	CROSSREFS	`Adjacent-numbered pages: BP267 BP268 BP269 BP270 BP271 * BP273 BP274 BP275 BP276 BP277`
	CONCEPT	`convex_hull (info \| search),` `number (info \| search),` `triangle (info \| search)`
	WORLD	`arial_font_centered_connected_symbol [smaller \| same \| bigger]`
	AUTHOR	`Merse E. Gáspár`

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