POLYGONS

1234567891011
Across
  1. 2. unit of area
  2. 5. a triangle with one angle of 90 degrees
  3. 6. a triangle with one obtuse angle
  4. 7. the sum of the lengths of a polygon's sides
  5. 10. a polygon with all sides the same length and all congruent angles
  6. 11. the shape formed by two intersecting lines
Down
  1. 1. a triangle with at least two congruent sides
  2. 3. a triangle with three congruent sides
  3. 4. a two dimensional shape
  4. 8. a multi-sided shape
  5. 9. the point with two sides intersect