Modular Origami Math

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Across
  1. 2. A balanced arrangement where one side of an object mirrors the other.
  2. 3. Angle: An angle of 90 degrees.
  3. 5. A four-sided shape with straight sides.
  4. 9. Angle: An angle greater than 90 degrees but less than 180 degrees.
  5. 10. A quadrilateral with two sets of parallel sides and four right angles.
Down
  1. 1. A five-sided shape.
  2. 4. A quadrilateral with one pair of parallel sides.
  3. 6. Triangle: A triangle with one right angle.
  4. 7. Angle: An angle less than 90 degrees.
  5. 8. Triangle: A triangle with two sides of equal length.