Across
- 4. angles an angle of 180°
- 6. sentence a combination of numbers and mathematical operations that children are often required to solve
- 7. symbols used to indicate that a particular collection of numbers and meaningful operations are to be grouped together and considered as one number
- 9. of a quantity able to assume different numerical values
- 11. each of the quantities in a ratio, series, or mathematical expression
- 12. on a line An angle is formed when two lines intersect each other
- 14. angles each of the pairs of opposite angles made by two intersecting lines
- 17. expression expressions that work the same even though they look different
- 18. the relation between two expressions that are not equal
- 19. a number or algebraic expression by which another is exactly divisible
Down
- 1. set the set of values that satisfy a given set of equations or inequalities
- 2. a collection of symbols that jointly express a quantity
- 3. pair a pair of adjacent angles formed when two lines intersect
- 5. angles those angles that sum up to 180 degrees
- 8. terms Terms whose variables (such as x or y) with any exponents (such as the 2 in x2) are the same
- 10. at a point describes the sum of angles that can be arranged together so that they form a full turn
- 13. angles two angles are adjacent if they have a common side and a common vertex
- 15. angles when their measures add to 90 degrees
- 16. a mathematical statement that shows that two mathematical expressions are equal