Section 1.2 Points, Lines, and Planes Undefined Terms.
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Transcript of Section 1.2 Points, Lines, and Planes Undefined Terms.
![Page 1: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/1.jpg)
Section 1.2
Points, Lines, and Planes
![Page 2: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/2.jpg)
Undefined Terms
![Page 3: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/3.jpg)
Point
Represents “location”; represented with a dot; no shape or size; 0-dimensional
A
![Page 4: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/4.jpg)
Line
Represents “straightness”; represented with a straight line with two arrowheads; 1-dimensional
A
B
or AB BA$%$%%$%%$%%$%%$%%$%%$%%$%%$%%$%%$%%$%%$% %$%
![Page 5: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/5.jpg)
Plane
Represents “flatness”; represented with a shape that looks like a tabletop; 2-dimensional
P
A B
C
plane P or plane ABC
![Page 6: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/6.jpg)
Other Definitions
![Page 7: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/7.jpg)
Collinear Points
Points on the same line.
![Page 8: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/8.jpg)
Coplanar Points
Points on the same plane.
![Page 9: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/9.jpg)
Line Segment
A portion of a line.
A
B or AB BA
![Page 10: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/10.jpg)
Ray
Consists of an initial point and extends in one direction to infinity.
A
B
not AB BA%%%%%%%%%%%%%%%%%%%%%%%%%%%%
![Page 11: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/11.jpg)
Intersection
The point(s) two geometric figures have in common
![Page 12: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/12.jpg)
Example
Draw 3 non-collinear points.
![Page 13: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/13.jpg)
Example
Sketch the intersection of a plane and a line.
.
![Page 14: Section 1.2 Points, Lines, and Planes Undefined Terms.](https://reader035.fdocuments.net/reader035/viewer/2022080902/56649eb05503460f94bb5cc0/html5/thumbnails/14.jpg)
Homework
pg 13 # 10-42 even, 49, 56-66 even