A right angle
The angle of incidence is the angle of which it item is reflected, this leads us on to the fact that the angle of incidence will always be the same as the angle of reflection.
(The set of all points equidistant from the two sides of the angle. :)
Well since an acute angle is everything with a smaller degree than a right angle, there is no perfect acute angle. However, to demonstrate an acute angle, i would go with around a 20-25 degree angle.
obtuse
The optimal angle for an air propeller, also known as the pitch angle, depends on factors such as the speed at which the propeller will operate and the desired performance characteristics. Typically, a pitch angle that allows the propeller to generate the most thrust efficiently without causing excessive drag is considered the best. This angle is often determined through testing and optimization processes specific to each application.
A lawn mower blade can be sharpened with a blade sharpner. Any major hardware store can do this for you. You remove the blade and clamp it to a flat surface. Then you use an angle grinder to sharpen the edge using the original angle as best you can. Safety glasses are always necessary as this is dangerous to your eyes.
there is no "best blade". they all do the same thing {cut fruit}
it is the square blade
blade of awe
Depends on you... what you want (spin, speed, control, good grip...) what you feel more comfortable with. In conclusion, there's not a BEST PING PONG BLADE but there is YOUR best ping pong blade.
A. The angle is smaller than a right angle
Leaf blade.
Hologram
kai 's dranzar is the best beblade
The best thing to do on an ineffective lawnmower blade is to replace it.
The triple blade shaver is great and a good price.