Geometry Terms

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Across
  1. 6. A line which cuts a line segment into two equal parts at 90°
  2. 8. an angle of 180°
  3. 9. similarity or exact correspondence
  4. 12. the action or condition of becoming or being made wider, larger, or more open
  5. 13. a polygon with three edges and three vertices
  6. 15. the middle point of a line segment
Down
  1. 1. a plane figure with four straight sides and four right angles
  2. 2. divide into two equal parts
  3. 3. two straight lines in a plane that do not intersect at any point
  4. 4. folding or "flipping" an object over the line
  5. 5. a quadrilateral whose four sides can be grouped into two pairs of equal-length sides that are adjacent to each other
  6. 7. 90° angle
  7. 10. middle number
  8. 11. identical in form
  9. 14. a parallelogram with opposite equal acute angles, opposite equal obtuse angles, and four equal sides