Across
- 4. change/original
- 5. shape equals 180 degrees
- 7. X= -b+√b^2-4ac/2a
- 8. ½ × base × height
- 10. Y=mx+b
- 11. 2πr
- 13. (x1 + x2)/2,(y1 + y2)/2
- 15. most common number
- 17. √(y1 – y2)² + (x1 – x2)²
- 18. a^2+b^2=c^2
Down
- 1. biggest-smallest
- 2. πr²
- 3. 2r
- 6. y-y1=m(x-x1)
- 9. (y1 – y2)/(x1 – x2)
- 12. part/whole × 100%
- 14. sum of terms/number of terms
- 16. middle # or average of 2 middle numbers