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BP252 Impossible solid in 3-D vs. possible solid in 3-D.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP247 BP248 BP249 BP250 BP251  *  BP253 BP254 BP255 BP256 BP257

KEYWORD

anticomputer, traditional

CONCEPT impossible (info | search),
3d_impossible_solid (info | search)

AUTHOR

Andreas Gunnarsson

BP253 Prime number vs. composite number.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP248 BP249 BP250 BP251 BP252  *  BP254 BP255 BP256 BP257 BP258

KEYWORD

noisy, traditional

CONCEPT prime (info | search),
cluster (info | search)

AUTHOR

Andreas Gunnarsson

BP254 Circle and two vertices are collinear vs. no two vertices and the circle are collinear.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP249 BP250 BP251 BP252 BP253  *  BP255 BP256 BP257 BP258 BP259

KEYWORD

traditional

CONCEPT collinear (info | search),
vertex_of_meeting_lines (info | search)

AUTHOR

Andreas Gunnarsson

BP255 Three pairs of parallel and non-collinear pieces of straight lines, each pair with a different slope vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP250 BP251 BP252 BP253 BP254  *  BP256 BP257 BP258 BP259 BP260

KEYWORD

traditional

CONCEPT feature_cluster (info | search),
cluster (info | search),
three (info | search),
parallel (info | search)

AUTHOR

Andreas Gunnarsson

BP256 Each large circle closer to a small circle than a large one, and each small circle closer to a large one than a small one vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP251 BP252 BP253 BP254 BP255  *  BP257 BP258 BP259 BP260 BP261

KEYWORD

traditional

CONCEPT length_line_or_curve (info | search),
near_far (info | search),
size (info | search)

AUTHOR

Andreas Gunnarsson

BP257 The distance from the center of the line to the bottom of the square is the same as the distance from the dot to the right edge of the square vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP252 BP253 BP254 BP255 BP256  *  BP258 BP259 BP260 BP261 BP262

KEYWORD

convoluted, notso, boundingbox, traditional, absoluteposition

CONCEPT bounding_box (info | search),
length_line_or_curve (info | search),
midpoint (info | search),
imagined_point (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
same_feature (info | search),
same (info | search),
distance_from_center (info | search)

AUTHOR

Andreas Gunnarsson

BP258 Objects identical after mirroring horizontally vs. objects identical after mirroring vertically.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP253 BP254 BP255 BP256 BP257  *  BP259 BP260 BP261 BP262 BP263

KEYWORD

traditional

AUTHOR

Andreas Gunnarsson

BP259 Two identical overlapping objects of which the top is rotated slightly clockwise vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP254 BP255 BP256 BP257 BP258  *  BP260 BP261 BP262 BP263 BP264

KEYWORD

traditional

CONCEPT turn_orientation (info | search),
rotation_required (info | search),
objects_overlap (info | search),
overlap (info | search),
same_shape (info | search),
same (info | search)

AUTHOR

Andreas Gunnarsson

BP260 Squares are either all empty or all contain something vs. not so.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP255 BP256 BP257 BP258 BP259  *  BP261 BP262 BP263 BP264 BP265

KEYWORD

traditional

CONCEPT all (info | search),
or (info | search),
empty (info | search)

AUTHOR

Carla Rispoli

BP261 Straight lines that join filled and outlined circles intersect vs. straight lines that join filled and outlined circles do not intersect.
(edit; present; nest [left/right]; search; history)
CROSSREFS

Adjacent-numbered pages:
BP256 BP257 BP258 BP259 BP260  *  BP262 BP263 BP264 BP265 BP266

KEYWORD

noisy, traditional

CONCEPT lines_coincide (info | search),
x-crossing (info | search),
outlined_filled (info | search),
feature_cluster (info | search),
cluster (info | search),
imagined_line_or_curve (info | search),
imagined_entity (info | search),
texture (info | search)

AUTHOR

Michael Ihde

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