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Geometry worksheet to help students learn to name planes, name points that lie in planes, and draw planes containing points.
Geometry worksheet to help students learn to name planes with three letters, identify and name coplanar points, and draw planes to show that any three points are coplanar.
​Assignment 1.4

​Planes

 
Objectives
Name planes using capital letters.  
 
Identify and name points that lie in planes.
 
Draw planes determined by three points.
 
Name planes using the names of three points in the plane.
 
Identify and name coplanar points.
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About Geometry Worksheet Assignment 1.4:  

 

Assignment 1.4 is an introduction to an undefined term of geometry: plane, and to coplanar points.

 

Prerequisite Skill: Name points (Assignment 1.1). 

 

Undefined term:  plane

 

Definition:  Coplanar points are points that lie in the same plane.

 

Postulates:  An infinite number of points lie in a plane.

                          Three non-collinear points determine a plane.

                          Any three points are coplanar.

 

 

 

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