Across
- 4. Any polyhedron having four plane faces
- 6. A definite length of time marked off by two instants
- 8. Being everywhere equidistant and not intersecting
- 11. Any of the natural numbers, positive or negative, or zero; not a fraction
- 13. Intersecting at or forming right angles
- 14. Make a mathematical computation
- 16. Of, in, along, or relating to a line; involving or having a single dimension
- 17. Greater than zero
Down
- 1. In three month intervals
- 2. Coinciding when superimposed
- 3. A symbol like x or y, that is used in mathematics or logical expressions to represent any of a set of values
- 5. One of two or more integers that can be exactly divided into another integer
- 7. Involving an equation whose terms are not of the first degree
- 9. Of superior grade
- 10. A quadrilateral with only two sides parallel
- 12. Less than zero
- 15. A bar chart representing a frequency distribution; heights of the bars represent observed frequencies
- 18. The amount of three-dimensional space occupied by an object