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BP206 Curve ends in a roughly up or down direction vs. curve ends in a roughly left or right direction.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP201 BP202 BP203 BP204 BP205  *  BP207 BP208 BP209 BP210 BP211

KEYWORD

traditional

CONCEPT downward_upward (info | search),
slope_at_endpoint (info | search),
line_or_curve_endpoint (info | search),
horizontal (info | search),
leftward_rightward (info | search),
tangent_absolute_direction (info | search),
absolute_direction (info | search),
vertical (info | search),
direction (info | search)

AUTHOR

Giuseppe Insana

BP268 Convex hull elongated vertically vs. convex hull elongated horizontally.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP263 BP264 BP265 BP266 BP267  *  BP269 BP270 BP271 BP272 BP273

CONCEPT convex_hull (info | search),
elongated_compact (info | search),
horizontal (info | search),
vertical (info | search)

WORLD

arial_font_symbols [smaller | same | bigger]

AUTHOR

Merse E. Gáspár

BP270 Only vertical or horizontal lines vs. neither vertical nor horizontal lines.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP265 BP266 BP267 BP268 BP269  *  BP271 BP272 BP273 BP274 BP275

CONCEPT or (info | search),
horizontal (info | search),
vertical (info | search)

WORLD

arial_font_centered_connected_symbol [smaller | same | bigger]

AUTHOR

Merse E. Gáspár

BP280 The left part is wider than the right part vs. the left part is narrower than the right part.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP275 BP276 BP277 BP278 BP279  *  BP281 BP282 BP283 BP284 BP285

CONCEPT convex_hull (info | search),
horizontal (info | search),
left_right (info | search),
length_line_or_curve (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
vertical (info | search)

WORLD

arial_font_two_symbols [smaller | same | bigger]

AUTHOR

Merse E. Gáspár

BP281 Equal number of horizontal and vertical lines vs. unequal number of horizontal and vertical lines.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP276 BP277 BP278 BP279 BP280  *  BP282 BP283 BP284 BP285 BP286

KEYWORD

traditional

CONCEPT horizontal (info | search),
number (info | search),
same_number (info | search),
same (info | search),
vertical (info | search)

WORLD

segments_cross [smaller | same | bigger]

AUTHOR

Sang-Joon Yoon

BP1087 A vertical line may pass through both objects vs. no such line exists
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP1082 BP1083 BP1084 BP1085 BP1086  *  BP1088 BP1089 BP1090 BP1091 BP1092

KEYWORD

easy, notso, rotate, unorderedpair

CONCEPT vertical (info | search),
direction (info | search)

AUTHOR

William B Holland

BP1206 Vertical axis of symmetry vs. no vertical axis of symmetry.
(edit; present; nest [left/right]; search; history)
COMMENTS

The solution for this Bongard Problem is also a (less specific) solution for BP500, "vertical axis of symmetry vs. no axis of symmetry".

CROSSREFS

BP1207 is the same solution but using the horizontal axis instead of the vertical axis.

BP1215 is the same solution but with the NW/SE diagonal instead of the vertical axis.

Adjacent-numbered pages:
BP1201 BP1202 BP1203 BP1204 BP1205  *  BP1207 BP1208 BP1209 BP1210 BP1211

KEYWORD

stub, notso, stretch, left-narrow, traditional

CONCEPT symmetry_axis (info | search),
symmetry (info | search),
vertical (info | search)

AUTHOR

Aaron David Fairbanks

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