Welcome back to Geometry!

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Across
  1. 4. a quadrilateral with exactly one pair of parallel sides
  2. 5. an _________ triangle has two sides of the same length.
  3. 8. Figure A
  4. 9. a quadrilateral with two pairs of parallel sides
  5. 11. ________ lines cross at a 90° angle.
  6. 13. to have the same measures
  7. 14. the "A" in ASA, SAS, AAS
  8. 17. Figure D
  9. 18. a parallelogram with four congruent sides
Down
  1. 1. the sum of two sides of a triangle is always _______ than the last side.
  2. 2. the side of a right triangle opposite of the right angle
  3. 3. Figure B
  4. 6. add up to 180°
  5. 7. ________ lines never cross.
  6. 10. Figure C
  7. 12. the _________ of a rhombus are perpendicular.
  8. 15. something that cuts a segment in half
  9. 16. the "S" in ASA, SSS, SAS, AAS