VNC / VTA, Lambert and Mercator, Arc of great circle, Rhumb Lines

VNC and VTA maps are owned by nav canada. This pdf shows current version and next planned update:

https://www.navcanada.ca/en/vfrchartlist.pdf

For general VFR dead reckoning airspace navigation:
VNC - 1 : 500,000
This is a Lambert conformal conic projection. A line on this map is an arc of a great circle and will match your compass heading after you add variation (on the map as isogonal / agonic lines) and deviation (your airplanes specific compass' error card), though it will not stay the same if you want to follow the great circle. This is impossible to navigate without computerized navigation.

For busier areas (eg Toronto airspace):
VTA - 1 : 250,000
This is a Transverse Mercator Projection. A line on this map is a direct route to your destination, or a Rhumb line. Rumb lines are easier to navigate because you use a constant bearing. A Rhumb line is a curved line that meets all meridians at the same angle.
Is a straight line on a Transverse Mercator Projection.

Rhumb line:
A line of constant bearing. Flying 80 degrees for an hour will take you on an arc and is a Rhumb line.

A agonic line:
Joins points of zero variation

Isogonic line:
Lines of equal magnetic variation

Deviation:
Interference caused by the aircraft

Air position
The position the aircraft would have reached without allowing for wind.