Examples of transform

rotate(angle), skewX(angle) and skewY(angle)

The angle may be given in degrees, radians, or as a turn
When skewing, an angle of 90 degrees will make the element disappear.
There is a skew(x,y) function but its use is not recommended.
See the code

rotate(0)
No change in direction
rotate(45deg)
Rotate 45° clockwise
rotate(-45deg)
Rotate 45° anti-clockwise
rotate(2rad)
Rotate 2 radians
rotate(0.5turn)
Rotate a half turn
skewX(30deg)
Skew the arrow 30 degrees along the x-axis
skewX(-30deg)
Skew the arrow -30 degrees along the x-axis
skewY(45deg)
Skew the arrow 45 degrees along the y-axis
skewY(-45deg)
Skew the arrow -45 degrees along the y-axis

Source: Arrow Image