Geometric Shapes and Area

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Across
  1. 2. 2D figure consists of points equidistant from the center
  2. 4. measurement of a surface enclosed 2D spaces
  3. 9. 4 sided polygon
  4. 12. 2 sides congruent either triangle or trapezoid
  5. 13. describes a triangle drawn inside a circle
  6. 15. 2 dimensional contour that describes an object or area
  7. 16. generated by a point moving in a plane which is the sum of 2 points constant and equal to the major axis
  8. 17. 6 sided polygon
  9. 18. 5 sided polygon
Down
  1. 1. the constant ration between the circumference and the diameter of a circl
  2. 3. describes a circle drawn inside a triangle
  3. 5. polygons with all sides equal and interior angles equal
  4. 6. 2D plane fiqure bounded by straight line like triangles, quadrilaterals...
  5. 7. 3 sided polygon
  6. 8. quadrilaterals with both pairs of opposite sides parallel
  7. 10. equal distance
  8. 11. the shape of countless engineered products like tubes, cups, pins
  9. 14. either 90 degree angle or a triangle with 90 degree angle
  10. 19. figure formed by intersection of 2 rays example acute, right, obtuse
  11. 20. 8 sided polygon