Geometry

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Across
  1. 5. Two lines or segments that intersect at a right angle.
  2. 6. A parallelogram with four congruent sides.
  3. 7. Two adjacent angles whose sum is 180 degrees.
  4. 8. A quadrilateral with only one pair of parallel sides.
  5. 9. A parallelogram with four right angles.
  6. 10. In a coordinate plane, it measures the steepness or incline of a line.
  7. 11. An angle whose measure is less than 90 degrees.
Down
  1. 1. A four-sided polygon.
  2. 2. Two angles whose sum is 90 degrees.
  3. 3. Angles A pair of opposite angles in intersecting lines.
  4. 4. To cut in half.