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www.reference.com/world-view/two-different-ways-name-plane-3c4cfba3cb77fa73

A geometric plane can be named as a single letter, written in upper case and in cursive lettering, such as plane Q. A plane can also be named by identifying three separate points on the plane that do not form a straight line. A plane in geometry is a flat surface extending infinitely in all directions, with zero thickness.

To give the plane other names, you can use any 3 or 4 points in the plane. So, ELAN would be another name, no matter in which order you list those letters. Another name could be NAL or LEA .

en.wikipedia.org/wiki/Plane_(geometry)

Euclid set forth the first great landmark of mathematical thought, an axiomatic treatment of geometry. He selected a small core of undefined terms (called common notions) and postulates (or axioms) which he then used to prove various geometrical statements.Although the plane in its modern sense is not directly given a definition anywhere in the Elements, it may be thought of as part of the ...

It's generally 3, since it takes 3 points to define a plane (two for a line). You can specify a plane by naming 3 points in it, using a coordinate system (e.g., Cartesian). If you use letters, those letters have to be mapped to a coordinate system.

In a three-dimensional space, a plane can be defined by three points it contains, as long as those points are not on the same line. Learn more about it in this video.

www.mathsisfun.com/geometry/plane-geometry.html

Plane Geometry If you like drawing, then geometry is for you! Plane Geometry is about flat shapes like lines, circles and triangles ... shapes that can be drawn on a piece of paper. Hint: Try drawing some of the shapes and angles as you learn ... it helps. Point, Line, Plane and Solid.

virtualnerd.com/geometry/fundamentals/points-lines-planes/plane-definition

Virtual Nerd's patent-pending tutorial system provides in-context information, hints, and links to supporting tutorials, synchronized with videos, each 3 to 7 minutes long. In this non-linear system, users are free to take whatever path through the material best serves their needs. These unique features make Virtual Nerd a viable alternative to private tutoring.

www.slideshare.net/marglema9/geometry-points-lines-planes

PRACTICE Name three points in the diagram that are not collinear. 1 2 3 13. PRACTICE Decide whether the statement is true (T) or false (F) 1. Points A,B and C are collinear. 2. Points A,B and C are coplanar. 3.Point F lies on DE. 4. DE lies on plane DEF. 5. BD and DE intersect. 6. BD is the intersection of plane ABC and plane DEF.

www.cliffsnotes.com/.../geometry/fundamental-ideas/points-lines-and-planes

Point, line, and plane, together with set, are the undefined terms that provide the starting place for geometry.When we define words, we ordinarily use simpler words, and these simpler words are in turn defined using yet simpler words. This process must eventually terminate; at some stage, the definition must use a word whose meaning is accepted as intuitively clear.