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Chapter 5: Problem 89

What is a half-plane?

Short Answer

Expert verified
A half-plane is one of the two regions into which a plane (a flat, two-dimensional surface that extends infinitely far) is divided by a line, including the line itself.

Step by step solution

01

Understanding Planes

A plane is a flat, two-dimensional surface that extends infinitely far. A plane is determined by three points not in a straight line.
02

Defining Half-Plane

A half-plane is one of the two regions into which a plane is divided by a line, called line of separation. It includes the line as well.
03

Example of Half-Plane

Think of a piece of paper (which is a plane). Draw a straight line down the middle. Each of the sections on either side of the line (including the line) is a half-plane.

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