170 likes | 458 Vues
Points, Segments, Lines, Angles, and Planes. C.1.2.1 : Identify, describe and/or label parallel, perpendicular or intersecting lines. C.1.2.2 :Identify, draw and/or label points, planes, lines, line segments ,rays, angles, and vertices. Essential Questions.
E N D
Points, Segments, Lines, Angles, and Planes C.1.2.1 : Identify, describe and/or label parallel, perpendicular or intersecting lines. C.1.2.2 :Identify, draw and/or label points, planes, lines, line segments ,rays, angles, and vertices.
Essential Questions • What are the characteristics of points, lines, line segments, rays, and planes? • Where can we find examples of these in daily life? • How can we use this information in daily life?
Point A point is like a dot, and is named by one letter. Tip of a pencil M
Line A line is an infinite set of points that expand in both directions. n A B Pretend this line of cars will go on forever.
Line Segment A line segment is part of a line, defined by two endpoints. C D
Ray A ray is part of a line with one endpoint. It extends infinitely in one direction. C D
Plane A plane is the set of all points that form a flat surface. It extends in all directions infinitely.
Intersecting Lines Two or more lines that meet at a point. F AB and CD intersect at point F.
Parallel Lines Two or more lines that never intersect. AB CD
Perpendicular Lines Two lines that intersect and form RIGHT angles. AB CD