Across
- 3. A number divisible only by 1 and itself
- 4. A closed figure with four equal sides
- 5. The result of addition
- 6. A polygon with 3 sides
- 8. An angle less than 90°
Down
- 1. Half of a circle's diameter
- 2. The longest side of a right-angled triangle
- 3. The result of multiplication
- 7. A whole number, positive or negative