# Selecting a Draw Mode

**Right Angle Draw Mode** and** Ortho Draw Mode** may
be selected to specify draw modes in Global Mapper.

##
Right Angle
Draw Mode

When drawing a line or area feature, after the first
two vertices are defined, the third vertex must be 0, 90, 180 or 270 degrees
from the initial line segment. This will result in an area or line that is composed
of right angles.

##
Ortho Draw
Mode

When drawing a line or area feature the first vertex can
be placed anywhere and from there the next vertex must be at an angle
of 0, 90, 180 or 270 degrees from the initial vertex. All subsequent vertices
also follow this rule. This will result in an area or line that is composed
of right angles with respect to North, i.e. orthogonal to the projection.