geometry vocabulary

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Across
  1. 1. the absolute value of the difference between two coordinates on a line
  2. 5. the point that divides a segment into two congruent segments
  3. 8. the axiom which states that the length of a line segment divided into smaller pieces is the sum of the lengths of all those smaller segments
  4. 10. terms that can be described using known words
  5. 11. a line with two arrowheads extending without an end and has one dimension
  6. 12. consists of two end points and all the points in between
Down
  1. 2. the set of points two or more geometric figures have in common
  2. 3. words that do not have formal definitions but there is an agreement about what they mean
  3. 4. location in space that is represented by a dot and has no dimension
  4. 6. a flat surface made up of points that has two dimensions and extends without an end and is represented by a slanted four-sided figure
  5. 7. the branch of mathematics concerned with the properties and relations of points, lines, surfaces, solids, and higher dimensional analogs.
  6. 9. a line that consists of two endpoints and all the points between them