Because it's not there anymore!
The section that has been cut is called a bridle path
Smithsonian
If you cut the heart so that there is a superior and inferior part the section is a transverse section.
Section is the vertical cut of the building.....
The cross-section of a cube can vary depending on how it is cut. If sliced parallel to one of its faces, the cross-section will be a square. If cut diagonally, the cross-section can be a rectangle or a more complex polygon, depending on the angle and position of the cut.
A circle.
When you cut a cross-section of a three-dimensional shape, each resulting part retains the same number of edges and surfaces as the original shape, but they are distributed differently. The cut creates new edges and surfaces at the intersection, but overall, the total count remains consistent. This property holds true for regular geometric solids, where symmetry and uniformity are maintained through the cut. Thus, the total number of edges and surfaces remains unchanged, albeit reconfigured.
A cut along the transverse plane= transverse or cross section. *(If cut at an angle= oblique section).
Full section is the of section where we cut a machine through same beginning to the end
it's a drawing of a piece,cut in half showing you the section of the object, as if you cut the object in half yourself and looked inside it !!
You would cut off a corner.
When a rectangular prism is cut obliquely, the cross-section can take on various shapes depending on the angle and position of the cut. Typically, the most common cross-section is a parallelogram, but it can also be a trapezoid or even a more complex shape, such as a polygon with more sides, if the cut is made at different angles. The specific dimensions and angles of the cut will determine the exact shape and area of the cross-section.