In isometric drawing, the standard angles used to represent the object are typically 30 degrees to the horizontal axis. Specifically:
- The vertical axis remains vertical (at 90 degrees to the horizontal).
- The two horizontal axes are both drawn at a 30-degree angle from the horizontal.
This method gives the appearance of three dimensions on a 2D surface, with the angles between the axes being equal (120 degrees) for a well-proportioned, symmetrical look.