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take a 3-dimensional object, and picture a sharp knife cutting it.
More correctly, a "plane" (thus, 2-dimensional) going through it.
The point at which the knife - or plane - intersects or touches the 3D object, is its cross section.
In a simple case, for example a sphere (meaning a "ball" with no middle, only a surface) then ANY cross section of it will be a "circle", (if you are "just touching it" you'd have a point, which is -- sort of like a circle of 0 radius).
That is the geometric definition.
A "practical" definition might be the "cross section of an airplane body". In THIS case your cross section would show the outer skin, the frame, the inner wall, the seats, floor, air ducts, wiring, hydraulic lines (which would look like 'o' because you presumably sliced it perpendicular to the way it is going), etc. Thus a computer aided design or drafting (CAD) program could show you a "slice" of something - a cross section - at any point, to for example see how close something is to something else, etc.
Another cross-section example would be CAT scans - such as for a brain problem - each computer generated slice is a "cross section" of the brain at that distance say from the top of your head (though it could be shown front to back, or probably any angle) - but what you are seeing is the intersection of a "plane" and the object.
What else can I help you with?
What is a example of a trapezoid?
Cross-section of a trough, a wheelbarrow, some rooves.
What 2D shape would you see in the cross section?
The shape of the cross section depends on the 3D object being sliced. For example, if you slice through a cylinder horizontally, the cross section would be a circle. If you cut through a cube diagonally, the cross section could be a triangle or a rectangle, depending on the angle of the cut. Thus, the specific 2D shape observed in the cross section varies based on the object's geometry and the orientation of the cut.
What has a circular cross section when the cross section is taken parallel?
A cylinder has a circular cross section that is parallel to its base.
What type of cross section is preferred for a crane hook?
trapezoidal cross section
What degree in cross section of a sphere?
Every cross-section of a sphere is a circle.
Is it possible to create a square cross section?
Yes a prism can have a square cross-section
What is a example of a trapezoid?
Cross-section of a trough, a wheelbarrow, some rooves.
Is a three-dimensional figure with no triangular faces have a cross section that is a triangle?
Yes. A cuboid, for example, has triangular cross sections
What 2D shape would you see in the cross section?
The shape of the cross section depends on the 3D object being sliced. For example, if you slice through a cylinder horizontally, the cross section would be a circle. If you cut through a cube diagonally, the cross section could be a triangle or a rectangle, depending on the angle of the cut. Thus, the specific 2D shape observed in the cross section varies based on the object's geometry and the orientation of the cut.
What has a circular cross section when the cross section is taken parallel?
A cylinder has a circular cross section that is parallel to its base.
Can the cross section of a cuboid be a trapezium?
Not a right cross-section.
What is the function of the cross section of a root and a stem?
cross-section of a root
What type of cross section is preferred for a crane hook?
trapezoidal cross section
What degree in cross section of a sphere?
Every cross-section of a sphere is a circle.
Can a cube have an octagonal cross section?
No, a cube cannot have an octagonal cross-section.
What Is a cross section of a rectangular prism?
The cross section can be a triangle, rectangle or a hexagon.
How do you find the length of a prism with the cross-section and volume?
length = volume/cross-section
