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GEOMETRY
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Is this 3D object?
yes
Oops!
Okay!
does chessboard has height?
no
Oops!
Okay!
Is this 3D image?
yes
Oops!
Okay!
does building has height?
yes
Oops!
Okay!
Is this 2D image?
yes
Oops!
Okay!
Is this 2D object?
no
Oops!
Okay!
does the brick has height?
yes
Oops!
Okay!
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