Patterns of Shape Lesson 1

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Across
  1. 3. A four-sided polygon with at least one pair of parallel sides
  2. 7. A four-sided polygon with each of its interior angles being less than 180° and whose diagonals lie inside the closed shape
  3. 9. A parallelogram with four congruent sides and four right angles
  4. 11. Next to
  5. 13. A subdivision of an object into triangles
  6. 14. Unmoving when pressure is applied
  7. 16. A four-sided polygon that has one interior angle greater than 180°
Down
  1. 1. Two angles whose sum equals 180 degrees
  2. 2. three-dimensional figures
  3. 4. two-dimensional figures
  4. 5. A parallelogram with four congruent sides
  5. 6. A paralellogram with four right angles
  6. 7. Two angles whose sum equals 90 degrees
  7. 8. A four-sided polygon with opposite sides congruent and parallel
  8. 10. A four-sided polygon that has two pair of adjacent sides congruent
  9. 12. Inequality Theorem The sum of two sides of a triangle must be greater than the third side
  10. 15. One after the other