Final answer:
Implied lines, contour lines, and foreshortening are types of lines used in a drawing to show that part of an object has been removed.
Step-by-step explanation:
The type of lines that can be used in a drawing to show that part of an object has been removed are implied lines, contour lines, and foreshortening.
Implied lines are lines that are not actually drawn but can be connected in our minds to create the lines. Contour lines are lines that define shapes and are used to outline figures and forms in an image, giving a sense of shading and form. Foreshortening is a technique that creates the appearance of objects extending into space by shortening the lines used to draw them.