Across
- 4. A rectangle with all four sides equal
- 9. To arrange into types
- 10. A quadrilateral with opposite sides parallel and equal
- 12. A simple, rough drawing
- 13. A parallelogram with four equal sides and with no right angles
- 15. A parallelogram all of whose angles are right angles(one with adjacent sides of unequal length)
- 16. A round plane figure whose boundary consists of points equidistant from a fixed point
Down
- 1. A polygon having three sides
- 2. To make certain that something is correct or true
- 3. A polygon of four sides
- 5. To calculate or to judge the value
- 6. A shape with four sides, only two of which are parallel
- 7. To judge or to calculate roughly or approximately
- 8. To find out by using numbers
- 11. To put into a desired order
- 14. To find out exactly by making calculation or by collecting information