### 6. Angles project true size only when the plane containing the angle and plane of projection are this:

### 7. Isometric drawings, unlike isometric projections, are drawn using the full length measurements of the actual drawing and lack foreshortening.

### 8. If a circle lies in a plane that is not parallel to the plane of projection, the circle projects as an ellipse.

### 9. If a circle lies in a plane that is not parallel to the plane of projection, it still projects as a circle.