Intersecting Planes
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Definition of Intersecting Planes
The two planes that meet in a single line are called Intersecting Planes.
More About Intersecting Planes
 Two planes always intersect in a line as long as they are not parallel.
 Two planes cannot intersect in more than one line.
Video Examples: Intersections of Two Planes
Example of Intersecting Planes
Therefore, the line Kl is the common line between the planes A and B.
Solved Example on Intersecting Planes
Ques: Identify the intersection between two planes.
Choices:
A. Plane AB. Plane B
C. Line CD
D. None of these
Correct Answer: C
Solution:

Step 1: Two planes are said to be in intersection if they cross in a single line.
Step 2: Here, line CD intersects the plane A and plane B shown in figure.
Step 3: Therefore, line CD is the intersection between the two planes.
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