Across
- 2. law of addition in which two whole numbers (a+b)=(b+a)
- 3. natural numbers together with 0
- 5. an angle having more than 90° and less than 180°
- 6. polygon having seven sides
- 7. triangles having two sides equal
Down
- 1. a simple closed figure bounded by four line segments
- 2. numbers having more than two factors
- 4. polygon having nine sides
- 8. fractions having same denominators