Body Planes body planes demo. Name the planes in these figures:
1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition....
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Transcript of 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition....
![Page 1: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/1.jpg)
1.2 Points, Lines, and PlanesUnit 1, Day 1
![Page 2: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/2.jpg)
Do Now
Match the word with its informal definition. (Copy in your notes.)
1. Extends infinitely in one dimension.
2. Has no dimension.3. Extends infinitely in
two dimensions
A. Point
B. Plane
C. Line
![Page 3: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/3.jpg)
More Vocabulary
Points are said to be collinear if they lie __________________________
Points are said to be coplanar if they lie _________________________
![Page 4: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/4.jpg)
Let’s think…
You can draw a line through any _____ points. So in order to name noncollinear points, you need at least ________.
You can draw a plane through any ______ points. So in order to name noncoplanar points, you need at least ________.
![Page 5: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/5.jpg)
Ex. 1: Naming Collinear and Coplanar Points
a. Name three points that are collinear.
b. Name four points that are coplanar.
c. Name three points that are noncolinear.
G
D E F
H
![Page 6: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/6.jpg)
More Vocabulary
The line segment AB ( _____) consists of the endpoints ___ and ____ and all of the points on line AB that are _______________.
The ray AB (______) consists of the initial point ___ and all of the points on line AB that are on the same side as point ____. Ray AB and ray BA are not the same!
![Page 7: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/7.jpg)
More Vocabulary
If C is between A and B, then ray CA and ray CB are considered ___________________. Note: When we say “between” in this class, it
implies that the three points are on the same line.
![Page 8: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/8.jpg)
Ex. 2: Drawing lines, segments and rays
Draw three noncollinear points, J, K, and L.
Then draw JK, KL and LJ.
![Page 9: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/9.jpg)
Ex. 3: Drawing Opposite Rays
Draw two lines, MN and PQ, that intersect at a point, X. Name two pairs of opposite rays.
![Page 10: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/10.jpg)
Intersection
Two or more geometric figures are said to intersect if _______________________________. The intersection is the set of points the figures
have in common (usually another figure!).
Line with plane:
Plane with another plane:
![Page 11: 1.2 Points, Lines, and Planes Unit 1, Day 1. Do Now Match the word with its informal definition. (Copy in your notes.) 1.Extends infinitely in one.](https://reader036.fdocuments.in/reader036/viewer/2022082613/5697bfeb1a28abf838cb7aa4/html5/thumbnails/11.jpg)
Closure
Suppose rays CA and AT are opposite rays. What does this tell you about the points C, A, and T?