Geometry crossword puzzle

123456789101112131415
Across
  1. 5. a ray that divides a given angle into two congruent angles each half the size of the given angle
  2. 9. pairs of nonadjacent angles that lie on the same side of a transversal of two lines and in a corresponding positions
  3. 12. a transformation that flips a figure over a line of reflection
  4. 13. two angles that share a vertex and a side but no points in their interiors
  5. 14. part of a line with two endpoints
  6. 15. lines that intersect to form right angles
Down
  1. 1. a transformation that turns a figure about a fixed point, called the center of rotation
  2. 2. figures that have the same size and shape
  3. 3. angles between two lines and on opposite sides of a transversal
  4. 4. the sum of two angles is 90
  5. 6. a line, segmen, or ray that is perpendicular to a segment at its midpoint
  6. 7. do not intersect
  7. 8. closed plane figure with at least three sides
  8. 10. a polygon with all its sides congruent and all its angles congruent
  9. 11. two angles whose measure up to 90