Across
- 1. A part of a line that starts at one point and goes on forever in one direction.
- 4. A number that divides another number exactly.
- 8. A letter or symbol that stands for a number we don’t know yet.
- 9. two or more sets is a new set that contains all elements that are in any of the sets.
- 10. Having exactly the same shape and size (used in geometry).
Down
- 2. Sum of numbers divided by how many numbers there are.
- 3. lines that meet or cross at a right angle (90°).
- 4. The bottom number in a fraction.
- 5. To change something from one form or unit to another.
- 6. A vertical line of numbers or items
- 7. A set whose elements are all in another set.