Angle of leg sweep

In general, the center sweeps should all be flat and the lows slightly downward, but the high sweeps, in theory, are better downward.

The principle is very simple, the person is basically standing column, but the legs open outward, the head under the head also have open, so slightly downward in order to ability to make complete. The stretcher is hitting the center, closer to the column, flat is good.

High sweeps are usually at very specific angles if you want to sweep diagonally upwards. Also, if you look closely, you'll notice that most effective high sweeps, after reaching the apex, will have a change of angle. This is usually done by turning the body.