isometric drawings shift key

[Yury]

I want to make an isometric drawing, based on a 30 degree angle.
Can I change visio's settings so that when I press shift to draw a line, the
angle it produces is not 45 degrees, but 30 degrees?

 

[David Parker]

No, but check out Tools / Snap & Glue / Advanced / ...
Isometric angles (deg)

If Isometric angle lines is selected under Shape extension options,
specifies the angles for which shape extension lines appear, such as 30, 60,
and 90 degrees. You can enter up to 10 angles (in degrees), separated by
commas. This option is most useful if you are creating an isometric drawing.
A line segment can include line shapes and lines used to create the sides of
a polygon.