Across
- 2. the difference of the upper and lower limits
- 5. a parallelogram with a right angle
- 9. a system of equations having no solution are said to be _____
- 10. by joining the midpoints of all sides of a quadrilateral, a _____ is formed
- 13. in x²y², "4" is the _____ of the polynomial
Down
- 1. a line passing through two or more parallel lines
- 3. a line touching one, singular point on a circle
- 4. the mean of the upper and lower limits
- 6. in a semi-circle, both the major segment and sector are _____
- 7. the intersection-point of all three medians of a triangle
- 8. the longest chord in a circle
- 11. a universal truth not needing proof
- 12. the values in square root that cannot be further simplified into whole numbers or integers