PIS L1I1

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Across
  1. 4. a polygon with an angle greater than 180 or a diagonal can be drawn outside of polygon
  2. 5. a quadrilateral have two pairs of opposite sides congruent
  3. 9. a quadrilateral with at least one pair of parallel sides
  4. 10. same size, same shape
  5. 11. a parallelogram with four right angles
Down
  1. 1. line segment connecting any two non-adjacent vertices
  2. 2. a polygon with all angles less than 180 or a polygon with all diagonals inside the shape
  3. 3. a triangle is formed if the sum of the lengths of any two sides is greater than the third side
  4. 6. a parallelogram with four congruent sides
  5. 7. a rhombus with four right angles
  6. 8. a quadrilateral with two pairs of consecutive sides congruent
  7. 9. dividing polygon into triangles