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Geometry (H) C01-L02

Wirtz Combined Geometry Chapter 1 Lesson 2

Point (p5) An undefined term - no size, indicates location, and usually represented by a dot.
Line (p5) An undefined term - extends two directions infinetely and has no thickness
Plane (p5) An undefined term - A flat surface that is infinitely large and with zero thickness
Space (p6) The set of all points.
Collinear points (p6) Points all in one line.
Coplanar points (p6) Points all in one plane.
Intersection (p6) The set of points that are in both figures.
Horizontal planes (p9) Planes which run left-to-right.
Vertical planes (p9) Planes which run up and down.
Undefined terms (p5) Point, line, and plane are accepted as intuitive ideas and are not defined.