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Posted on April 25, 2022 (Updated on July 9, 2025)

What is a cross section of a 3d figure?

Space & Navigation

A cross-section is a plane section that is a section of a three-dimensional object that is parallel to one of its planes of symmetry or perpendicular to one of its lines of symmetry. Describe shapes formed by cross-sections (square, rectangle, triangle, etc).

What is the cross section of a 3D object?

A cross section is the intersection of a three-dimensional figure and a plane. You can think of a cross section as a two-dimensional slice of the figure. A vertical slice can be parallel to the left and right faces. The cross section always has the same shape and dimensions as there faces.

How do you find the cross section of a 3D shape?

Video quote: When we open up that object. This is called the cross-section a cross-section is a shape that you form when you cut through something that's three-dimensional.

What is a 3D cross shape called?

Prisms and pyramids



A prism is a 3D shape which has a constant cross section – both ends of the solid are the same shape and anywhere you cut parallel to these ends will give you the same shape.

What does cross section mean in shapes?

Cross-section Definition



In Geometry, the cross-section is defined as the shape obtained by the intersection of solid by a plane. The cross-section of three-dimensional shape is a two-dimensional geometric shape. In other words, the shape obtained by cutting a solid parallel to the base is known as a cross-section.

How do you find cross-sections?

To calculate cross-section of a pipe:

  1. Subtract the squares of inner diameter from the outer diameter.
  2. Multiply the number with π.
  3. Divide the product by 4.


How do you do a cross-section in geometry?

Video quote: See. When we slice an apple in half vertically up and down like that we can see the cross-section. It's kind of heart-shaped. We can see the seeds. But if we slice it horizontally.

What’s area of cross-section?

The cross-sectional area is the area of a two-dimensional shape that is obtained when a three-dimensional object – such as a cylinder – is sliced perpendicular to some specified axis at a point. For example, the cross-section of a cylinder – when sliced parallel to its base – is a circle.

What is a cross-section in construction?

Cross sections, or sections, as they’re commonly called, are architectural drawings that are orthographic projections of structures with a cut transecting them. This type of projection shows a three-dimensional drawing in a two-dimensional view.

What is a cross-section of a cube?

Slicing Solids



A cross section is the face you get when you make one slice through an object. Below is a sample slice through a cube, showing one of the cross sections you can get. The polygon formed by the slice is the cross section.

What is cross-section in architecture?

A cross section, also simply called a section, represents a vertical plane cut through the object, in the same way as a floor plan is a horizontal section viewed from the top.

What is cross-section and longitudinal section?

Longitudinal studies and cross-sectional studies are two different types of research design. In a cross-sectional study you collect data from a population at a specific point in time; in a longitudinal study you repeatedly collect data from the same sample over an extended period of time.

What is the purpose of a cross-section drawing?

In technical drawing a cross-section, being a projection of an object onto a plane that intersects it, is a common tool used to depict the internal arrangement of a 3-dimensional object in two dimensions.

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