Shape and Space

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Across
  1. 3. the sides of a square are all______?
  2. 5. what is the perimeter of a rectangle, whose lenght is 20cm and width is 5cm.
  3. 6. the figure closed by the boundary.
  4. 8. the perimeter of this shape is called circumference.
  5. 11. what is the area of a triangle whose base is 4cm, height is 5cm.
  6. 12. what do you use to measure lenght.
  7. 13. I have three sides and three corners.
Down
  1. 1. the distance all around.
  2. 2. a four sided polygon whose sides are all 4cm.
  3. 4. a four sided polygon with 2 pairs of parallel lines.
  4. 7. the size of the surface.
  5. 9. the area of a triangle is calculated by _____ x height divided by 2.
  6. 10. what is the perimeter of a square whose side is 8cm.