POLYGONS

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Across
  1. 4. a triangle with three congruent sides
  2. 7. a triangle with one angle of 90 degrees
  3. 8. unit of area
  4. 9. a triangle with one obtuse angle
  5. 10. the point with two sides intersect
  6. 11. the shape formed by two intersecting lines
Down
  1. 1. a polygon with all sides the same length
  2. 2. it is the sum of the lengths of a polygon's sides
  3. 3. it is a multi-sided shape
  4. 5. a triangle with at least two congruent sides
  5. 6. a two dimensional shape