home > People > You can know the degree of an angle by hand only.

You can know the degree of an angle by hand only.

You can know the degree of an angle by hand only.-3trivia

You can know the degree of an angle by hand only.

Open your fingers as much as possible and place your palms on the surface of the angle you want to measure. The little finger should be at the bottom, representing 0°. The angle between the thumb and the little finger is 90°, and the angle between the little finger and the other fingers is 30°, 45°, and 60°, respectively.


发表评论

               
expression
Can also enter210