Q:

# What is half of a sphere called?

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Half a sphere is defined as a hemisphere. The term hemisphere is derived from the Greek word "hemi," which means "half" and the Latin word "shaera," meaning "globe."

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Hemispheres are everywhere. The Earth is the common example of a hemisphere. As a cylindrical body, the Earth is sectioned into four separate hemispheres – North and South and East and West. The human brain is often broken down into the cerebral hemispheres.

The Earth’s hemispheres naturally divide into seasonal opposites. The Northern Hemisphere, due to the tilt toward the sun, experiences summer from June through September and the Southern Hemisphere is in summer from December through March.

## Related Questions

• A:

A sphere has no faces, edges or vertices. By definition, it is a curved three-dimensional geometric figure whose surface is defined as the set of all the points equidistant from its center point.

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Find the volume of a sphere by solving for the equation V=4/3*pi*r^3, where V is volume, r stands for radius and pi is 3.1459. Cube the radius, and multiply that number by pi and 4/3 for the volume. Pi delineates the relationship between a circle's diameter and circumference.

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A vertex is a corner on a polygon, polytope or polyhedron, and when faces, facets or edges of an object come together, a vertex forms; however, because a sphere features no meeting points, it has no vertices. Even though a sphere does have one continuous surface, its lack of meeting points with any other surface means that it technically has no faces. Spheres have no lines, so they also have no edges.