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Video Definition 14--3D Geometry--Horizontal Cross-Section of a Cylinder

Horizontal Cross-Section of a Cylinder

Topic

3D Geometry

Definition

A horizontal cross-section of a cylinder is the intersection of the cylinder with a horizontal plane, resulting in a circle.

Description

Horizontal cross-sections of a cylinder are important for understanding cylindrical geometry. When a cylinder is sliced horizontally, the resulting shape is a circle, which is crucial for calculating properties like volume and surface area. This concept is applied in fields like engineering and manufacturing, where precise measurements are needed for cylindrical components. In math education, studying cross-sections of cylinders helps students grasp the concept of symmetry and the properties of circles in three-dimensional space. For example, a horizontal cross-section of a cylinder at its midpoint results in a circle with the same radius as the cylinder's base.

Cross-section of a cylinder
Consider the floors of this cylinder-shaped building 
as horizontal cross-sections.

For a complete collection of terms related to 3D Geometry click on this link: 3D Geometry Video Collection.

Common Core Standards CCSS.MATH.CONTENT.5.MD.C.3, CCSS.MATH.CONTENT.7.G.A.3
Duration 1 minutes
Grade Range 4 - 6
Curriculum Nodes Geometry
    • 3D Geometry
        • Cylinders
Copyright Year 2024
Keywords three-dimensional geometry, 3d Geometry, defnitions, glossary term, cylinder