Mathematical Words

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Across
  1. 2. Half the difference between the minimum and maximum values of the range.
  2. 3. The first coordinate in an ordered pair.
  3. 6. An angle that has measure less than 90°.
  4. 7. Two rays sharing a common endpoint.
Down
  1. 1. How close an approximation is to an actual value.
  2. 2. The rate of change of velocity over time.
  3. 3. The shortest distance between the base of a geometric figure and its top, whether that top is an opposite vertex, an apex, or another base.
  4. 4. The line segment from the center of a regular polygon to the midpoint of a side, or the length of this segment.
  5. 5. The mathematics of working with variables.
  6. 7. A statement accepted as true without proof.