Geometry crossword puzzle

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Across
  1. 1. Triangle ABC= Triangle DEF, Angle A and angle D are congruent.
  2. 5. To slide an image
  3. 7. Opposite angles that form when two parallel lines intersect
  4. 13. XY=XY
  5. 16. The angle outside of the triangle is equal to the 2 non adjacent angles in the triangle
Down
  1. 2. If two lines are parallel, angles that are on different vertices but on the same side of the transversal are congruent.
  2. 3. Lines that don’t intersect
  3. 4. Cutting a pizza in half
  4. 6. The angles in this figure are equal to X, solve for X: 4x=240
  5. 8. A tool used in various constructions
  6. 9. Can be thought of as a mirror image
  7. 10. Example: a balloon inflating
  8. 11. The angles always add up to 180 degrees
  9. 12. 2 angles that add up to y. Solve for y
  10. 14. It divides a part into two equal parts.
  11. 15. A result of perpendicular lines