Exploring Polygons

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Across
  1. 1. 2D shape with all sides and angles equal.
  2. 3. Another name for the enneagon.
  3. 8. Refer to each angle form inside the shape.
  4. 11. six-sided shape like a honeycomb.
  5. 13. Three-sided shape with equal angles.
  6. 18. Forms when two lines meet at a vertex.
  7. 19. Prefix added to name an eight-sided shape.
  8. 20. Shape where each inside angle is less than 180.
Down
  1. 2. Any four-sided shape.
  2. 4. Number of angles a decagon has.
  3. 5. Area of rhombus = 1/2 the product of its ____.
  4. 6. Shape with unequal sides and different angles.
  5. 7. Types include isosceles and right-angled.
  6. 9. A four-sided shape.
  7. 10. Number of sides a pentagon has.
  8. 12. Angles between 0 and 90 degrees.
  9. 14. Number of sides a dodecagon has.
  10. 15. Shapes with equal sides and equal angles.
  11. 16. Any 2D closed shape with straight lines.
  12. 17. Perimeter = 2(length) + 2(width)