Across
- 2. angles having equal measure
- 4. figure formed by two rays meeting at a common endpoint.
- 6. cover of a book
- 7. to measure
- 9. earth
Down
- 1. ruler
- 3. a property of equality which a number is equal to itself
- 5. building blocks of geometry
- 6. figure with no length and width or simply with no dimension.
- 8. part of a line.