Geometry 1 1 Points Lines and Planes Page

Geometry 1 -1 Points Lines and Planes Page 4 Point A place in space, location no size. Points are denoted by a single capital letter.

Geometry 1 -1 Points Lines and Planes Page 4 Line An infinite collection of points. No width. Lines are denoted one of two ways. Two capital letters representing two points on the line. One lowercase letter that does not represent a point on the line.

Geometry 1 -1 Points Lines and Planes Page 4 Plane An infinite collection of points. No thickness. Usually illustrated as a parallelogram. A plane is denoted one of two ways. Three capital letters representing three non collinear points on the plane. One uppercase letter that does not represent a point on the plane.

Geometry 1 -1 Points Lines and Planes Page 4 Collinear Three or more points on the same line. Coplanar Four or more non collinear points on the same plane. Segment A finite portion of a line has two endpoints.

Geometry 1 -1 Points Lines and Planes Page 4 Ray An infinite portion of a line it has one endpoint. Endpoint Starting point of a ray. Opposite Rays Not Opposite Rays

Geometry 1 -1 Points Lines and Planes Page 6 In Exercises 1 -4, use the diagram. Plane ACE, Plane CBE, Plane ABE can switch the order of the letters

Geometry 1 -1 Points Lines and Planes Page 6 In Exercises 1 -4, use the diagram. 3. Name three points that are collinear. Then name a fourth point that is not collinear with these points. A, B & C are collinear, 4 th point is E or D 4. Name a point that is not coplanar with points A, C, E. D

Geometry 1 -1 Points Lines and Planes Page 6 In Exercises 5 -8, use the diagram.

Geometry 1 -1 Points Lines and Planes Page 6 8. On the diagram, draw planes M and N that intersect line k. ?

Geometry 1 -1 Points Lines and Planes Page 6 In Exercises 9 & 10, sketch the figure described.