A hemisphere value of 0.5 creates one-half of a sphere.

A hemisphere value of 0.5 creates one-half of a sphere.

• A. One-half of a sphere
• B. A full sphere
• C. A quarter of a sphere
• D. A sphere segment

Answer: (A)

A hemisphere value represents the portion of the full sphere on a 0 to 1 scale. Since a hemisphere is exactly half of a sphere, a value of 0.5 corresponds to one-half of the sphere. In other words, you’re keeping 50% of the sphere. If you used 1.0, you’d have the full sphere; 0.25 would be a quarter. A sphere segment describes a portion bounded by a plane and the curved surface, not simply half, so it isn’t the correct interpretation for 0.5.

A hemisphere value represents the portion of the full sphere on a 0 to 1 scale. Since a hemisphere is exactly half of a sphere, a value of 0.5 corresponds to one-half of the sphere. In other words, you’re keeping 50% of the sphere. If you used 1.0, you’d have the full sphere; 0.25 would be a quarter. A sphere segment describes a portion bounded by a plane and the curved surface, not simply half, so it isn’t the correct interpretation for 0.5.