Geometry

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Across
  1. 2. A parallelogram with right angles
  2. 4. A quadrilateral with only one pair of parallel sides
  3. 5. a triangle with two sides equal
  4. 8. a ten-sided polygon
Down
  1. 1. two lines intersecting at 90 degrees
  2. 3. A parallelogram with all its sides equal
  3. 6. an angle greater than a right angle and less than 180
  4. 7. All four my sides are equal, and both my diagonals are equal