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What is 1 + 3?
Geometry (CP) Vocab, Postualtes, and much more
Geometry Book by Larson, Published by Holt McDougal
Has no dimension. It is represented by a dot
Has one dimension. It is represented by a line with two arrowheads but it extends without end.
Has two dimensions. It is represented by a shape that looks like a floor or a wall but it extends witthout end.