Across
- 2. longest side
- 4. perpendicular line segment from vertex to opposite side
- 5. line segment joining vertex to mid point of opposite side
- 7. angles between 90 to 180 degree
- 9. two sides equal
Down
- 1. angles less than 90 degree
- 3. square on hypotenuse = sum of squares on its legs
- 6. no side equal
- 8. all angles equal