# Mathematics

##### Across
1. 4. the middle number of set
2. 7. ________________ Theorem
3. 9. the amount of space within a shape
4. 11. the same
5. 12. a mathematical statement that shows that 2 expressions are equal
6. 13. the basic equation of a ___________ equation is y=mx+c
7. 15. the space between 2 circles which share the same centre point
8. 17. an angle inside a polygon
9. 18. 1000000mg in 1 ________
10. 22. 1000 ________ is 1 kilogram
11. 24. irrational numbers
##### Down
1. 1. the average
2. 2. the top number of a fraction
3. 3. the process of timesing 2 numbers together
4. 5. an unknown number
5. 6. a triangle with 2 equal sides and one different side
6. 8. a triangle with 3 different sides
7. 10. the area within a 3D shape
8. 14. the largest number minus the smallest number in a set
9. 15. the space between 2 intersecting lines
10. 16. to reduce a number to its most basic form
11. 19. the proportion of something compared to another
12. 20. 100 centimetres
13. 21. the gradient is determined by _________ over run
14. 23. to work out the slope, rise over __________ is used.