QUADRILATERAL

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Across
  1. 2. AN ANGLE WHOSE MEASUREMENT IS 90
  2. 3. A KIND OF POLYGON
  3. 5. ONE PARALLEL SIDES
  4. 7. BISECT ANGLES
  5. 8. CONGRUENT POSTULATE WHERE ALL SIDES ARE CONGRUENT
  6. 11. SUM OF TWO CONSECUTIVE ANGLES
  7. 13. TWO TRIANGLES ARE THE SAME BUT DIFFER IN SIZE
  8. 14. POLYGON WHERE ANGLES AND SIDES ARE EQUAL
  9. 15. SUM OF TWO ANGLES IS 90
  10. 18. A 3 SIDED POLYGON
Down
  1. 1. ANGLES OF PARALLELOGRAM ARE CONGRUENT
  2. 2. A QUADRILATERAL WHERE ALL ANGLES ARE RIGHT
  3. 4. TWO PAIRS OF SIDES ARE PARALLEL
  4. 6. A SQUARED PLUS B SQUARED IS C SQUARED
  5. 9. ALL FOUR SIDES ARE CONGRUENT
  6. 10. FOUR SIDED POLYGON
  7. 12. DIAGONAL FORM A RIGHT ANGLE
  8. 15. OTHER TERM FOR EQUAL
  9. 16. MIDPOINT OF SIDES OF TRAPEZOID
  10. 17. A POLYGON WITH NINE SIDES