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