Dividing circles, constructing angles, and creating smooth curves.
Digital versions of the 2019 edition (and older) are available on educational repositories like Alleng.org . gdz po chercheniiu botvinnikov a.d 7-9 klass skachat
Proper use of instruments, standard line types, and lettering. standard line types
Learning how to "look inside" an object to show its internal structure. and Profile projections).
Technical drawing is all about precision. Always keep your 2H (hard) and HB (medium) pencils sharp.
Understanding how to represent a 3D object on a 2D plane (Frontal, Horizontal, and Profile projections).