Related Clues:
- Sharp or crucial
- Angle of less than 90 degrees
- Clever and perceptive
- Clever and canny
- Sharp like angle
- Shrewd, sharp
- Smart and canny
- Clever and shrewd
- Very perceptive, having sharp mind
- Sharp, angle or mind
- Sharp and clever
- Sharp as of mind - or pain
- Clever and crafty
- Shrewd, canny
- This angle is less than 90 degrees