Geometery Crossword Puzzle

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Across
  1. 3. A line that divides a line or an angle into two equivalent parts
  2. 5. At equal distances.
  3. 8. The point where the perpendicular bisectors of the sides of that particular triangle intersect
  4. 11. A quadrilateral with two pairs of parallel sides
  5. 12. The result of multiplying a number by itself
  6. 14. A quadrilateral with reflection symmetry across one of its diagonals
  7. 15. A line segment through a vertex and perpendicular to a line containing the side opposite the vertex.
  8. 16. A quadrilateral with both pairs of opposite sides parallel and all sides the same length
  9. 18. A closed 2-D shape, having 4 sides, 4 corners, and 4 right angles (90°).
  10. 19. The space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet.
Down
  1. 1. Center Point of an object
  2. 2. A line segment which bisects another line segment at 90 degrees
  3. 4. Having all its sides of the same length.
  4. 6. The center of the incircle of a triangle or other figure.
  5. 7. The common intersection of the three altitudes of a triangle or their extensions or of the several altitudes of a polyhedron provided these latter exist and meet in a point.
  6. 9. Quadrilaterals that have two parallel sides and two non-parallel sides
  7. 10. The middle number in a sorted list of numbers
  8. 13. Having equal angles.
  9. 17. A straight line joining two opposite corners of a square, rectangle, or other straight-sided shape.