turtle_set_angle_mode
Set angle mode — true for radians, false for degrees
RichnouLang by functions names.
Set angle mode — true for radians, false for degrees
Set turtle pen color
Set turtle heading to an absolute angle in radians
Set the canvas origin for turtle coordinates
Set turtle pen size
Set turtle x coordinate, draw if pen is down
Set turtle y coordinate, draw if pen is down
Return angle from turtle to a point
Two times PI (= TAU)
Create a vector (x,y)