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