Across
- 2. a triangle with only one symmetry axis
- 3. the symmetry axis of an angle
- 6. Pythagoras' favourite!
- 8. connects the midpoint of a side and the opposite vertex
- 12. the symmetry axis of a side
Down
- 1. all its angles measure 60°
- 4. circle whose center is the intersection of two of the definition #
- 5. intersection of two of definition %
- 7. circle whose center is the intersection of two of definition*
- 9. their sum is always 180°
- 10. perpendicular to one side and through the opposite side
- 11. 3 in a triangle