Across
- 5. a triangle has angles less than 90 degree.
- 7. two angles whose sum is 180°
- 8. a line that intersects two or more other lines
- 11. identical in size and shape
- 12. a polygon with equal sides and angles
Down
- 1. two angles or sides next to each other
- 2. a triangle has an angle greater than 90 degree
- 3. two straight lines that do not intersect
- 4. a triangle has two equal sides and angles
- 6. two lines at right angles to each other
- 9. angle an angle of 180°
- 10. a triangle has different sides and angles
- 13. a triangle has a 90 degree angle