Across
- 5. assumption in geometry
- 8. demonstrated statement
- 9. a student of thales
- 10. innermost brackets
Down
- 1. angle that is equal to 90°
- 2. angles whose sum is 180°
- 3. collection of facts
- 4. parts of a whole
- 6. Lines intersecting at right angle
- 7. statements mathematicians treat as TRUE