Foreshorten Guide
: You can specify document-level defaults for linear foreshortening via Tools > Options > Document Properties > Dimensions > Linear .
If a dimension is not automatically foreshortened, you can apply it manually: foreshorten
Tip: If the option is missing, ensure you are right-clicking the itself, rather than the dimension value. How to Add Foreshortened Dimensions in SOLIDWORKS : You can specify document-level defaults for linear