A Line Segment, or Segment - It has two endpoints., Betweenness of Points - For any two real numbers a and b, there is a real number n that is between a and b such that a<n<b. This relationship also applies to points on a line., Congruent Segments - Segments that have the same measure., Constructions - Methods of creating geometric figures without the benefit of measuring tools., Point M is between points P and Q - If and only if P, Q, and M are collinear and PM+MQ=PQ., Precision - The clustering of a group of measurements. It depends only on the smallest unit of measure available on a measuring tool., Absolute Error of a measurement - Equal to one half the unit of measure., Significant Digits - Nonzero digits are always significant.•In whole numbers, zeros are significant if they fall between nonzero digits.•In decimal numbers greater than or equal to 1, every digit is significant.•In decimal numbers less than 1, the first nonzero digit and every digit to the right are significant., Accuracy - How close a measured value comes to the actual or desired value., Relative Error of a measure - The ratio of the absolute error to the expected measure.,

Tools of Geometry (Linear Measurement)

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