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17 ) Measure to determine how much longer one object is than another, expressing the length difference in terms of a standard length unit. [2-md4] Local/National Standards:
Is the length and the height of an object the same thing?   No.   Length is a two-dimensional measure, whereas height is a 3-dimensional measure.   Something (a 3-D object) having height, will also have length.   But a 2â¦-D object can never have any height.