Across
- 1. The branch of mathematics concerned with the study of shapes and space.
- 5. A set of points that extend infinitely in two directions.
- 6. A mathematical operation that undoes the effect of another operation.
- 8. A number that cannot be expressed as a fraction.
- 9. A mathematical statement that two expressions are equal.
Down
- 1. A mathematical structure that consists of a set together with an operation.
- 2. A triangle with three sides of equal length.
- 3. The study of change and motion.
- 4. A polygon with six sides.
- 7. The ratio of the circumference of a circle to its diameter.