Across
- 3. a six-sided polygon.
- 4. a mathematical statement that the values of two mathematical expressions are equal.
- 8. the quality of being made up of exactly similar parts facing each other or around an axis.
- 9. non prime numbers.
- 10. any of a set of straight lines passing through one point.
- 11. the continuous line (or the measurement of it) forming the boundary of a closed geometrical figure.
Down
- 1. a quadrilateral all of whose sides have the same length.
- 2. the mathematical average of a set of two or more numbers.
- 5. an angle less than 90 degrees.
- 6. a four-sided plane rectilinear figure with opposite sides parallel.
- 7. either of two angles whose sum is 180°.