Maths crossword

5. a quantity that has both magnitude and direction but not position
6. something a line lacks
9. A geometric figure formed by two lines that begin at a common point or by two planes that begin at a common line.
11. three sided polygon
12. straight line touching a circle
14. a number whose whole number and the fractional part is separated by a decimal point
15. a statement that the values of two mathematical expressions are equal
17. (y2-y1)/(x2-x1)
19. exact reflection of form on opposite sides of a dividing line or plane
20. the science of numbers and their operations (see operation sense

1. The ........ of men to women was two to one
2. a line enclosing a plane areas
3. I decided to show the results in a bar ....... .
4. a transformation where an object maps to an image of the same shape but different size
7. the circular movement of an object around a centre.
8. a plane figure with four equal straight sides and four right angles
10. SOH CAH TOA
13. is a scalar quantity expressing the amount of three-dimensional space enclosed by a closed surface
16. To bring two or more numbers (or things) together to make a new total.
18. a mathematical object used to count, measure, and label