A plane can be named using a single capital letter placed at or near a corner of the plane diagram, or by using three non-collinear points on the plane.
Conditions: The object being named is a plane.; When using three points, they must not lie in a straight line.
A plane can be named using a single capital letter placed at or near a corner of the plane diagram, or by using three non-collinear points on the plane.
Conditions: The object being named is a plane.; When using three points, they must not lie in a straight line.
Three points must not lie on a straight line because if they are collinear, more than one flat surface can pass through them, meaning the plane is not unique. If the three points are non-collinear, exactly one plane contains them.
Conditions: The three points are distinct.; The points are being used to define or name a specific plane.
Three points must not lie on a straight line because if they are collinear, more than one flat surface can pass through them, meaning the plane is not unique. If the three points are non-collinear, exactly one plane contains them.
Conditions: The three points are distinct.; The points are being used to define or name a specific plane.
To name a line, choose any two points on the line and place a double-headed arrow symbol above their capital letter labels. The order of the two letters does not matter.
Conditions: The object being named is a line.; Two distinct points are chosen on that line.
To name a line, choose any two points on the line and place a double-headed arrow symbol above their capital letter labels. The order of the two letters does not matter.
Conditions: The object being named is a line.; Two distinct points are chosen on that line.