Across
- 4. Sum of two angles is 90 degree
- 6. Angle more than 90 degree
- 9. A regular triangle
- 11. Two lines in a plane which do not intersect
Down
- 1. A triangle having two equal sides
- 2. Sum of two angles is 180 degree
- 3. The longest side of a right- angled triangle
- 4. Two figures having same size and same length
- 5. A line intersects two parallel lines
- 7. A triangle with all its sides unequal
- 8. Angle less than 90 degree
- 10. Two angles having a common vertex