1. Warm-up
Spend 5 minutes studying for your rules quiz along with looking over your notes from Section 1.1
Objective 1: Check for understanding of rules and section 1.1

2. Rules Quiz
Turn the quiz in when you are finished, make sure to answer all of the questions on the front and back of the quiz

3. Homework Check

4. Geometry: Chapter 1 1.2 Points, Lines, and Planes
Objective 2: Able to accurately label and define points, lines and planes

5. Are ideas but do NOT have definition
Undefined Terms
Point, line, and plane
Are ideas but do NOT have definition
Used in definitions of other terms

6. Naming a Point: use one capital Letter
Undefined Terms
Point: a dot, NO SIZE
Naming a Point: use one capital Letter
Ex: Name ______

7. Line: extends forever in 2 directions, NO THICKNESS
Undefined Terms
Line: extends forever in 2 directions, NO THICKNESS
Naming a line (2 ways)
Any 2 points on the line with a over the top
A single lowercase letter
Ex:

8. Plane: Extends infinitely in all directions along a flat surface
Undefined Terms
Plane: Extends infinitely in all directions along a flat surface
Naming a Plane: (2 ways)
Name 3 points on the plane
One script capital letter
Ex:

9. Warm-up /10
There are 9 points total.
There are two intersections of lines
Some people dream of success... While others wake up and work hard at it.  ~Author Unknown

10. Objective
TLW be able to identify and label points, lines, and planes.
TLW define and describe postulate, collinear, and coplanar

11. Postulate: statements that are accepted true without further justification

12. Postulate: Two points Determine a line
Through any 2 pts there is exactly
one _____________
Postulate: Three points determine a Plane
Through any 3 points not on a line
there is exactly one ________

13. Examples: Use the figure at the right to:
1) Name 3 points _________
2) Name 2 lines __________
3) Name 2 planes _________

14. Other Terms Collinear: When points can be contained in a single line
Ex:
YES
Are the first 3 points collinear?
Second 3? NO

15. Coplanar: When points are contained in a single plane
Note: 3 points will always be coplanar

16. Examples: Use the diagram at the right to:
1) Name 3 pts that are collinear
2) Name 4 pts that are coplanar
3) Name 3 pts that are NOT collinear G H F E D

17. Warm-up 9/11
Define postulate, collinear, and coplanar.
Provide a counterexample to the statement, ‘the grass is green, then it rained’
Patriotism is easy to understand in America. It means looking out for yourself by looking out for your country. -- Calvin Coolidge

18. Objective
TLW define, label, and name rays and segments

19. Segments:
Naming a segment:
Ex:
A part of a line that begins at one point and ends at another.
Give the endpoints with over the top

20. Endpoint
Endpoint: The points at the ends of a segment

21. Ray
Ray:
Naming a Ray:
EX:
A part of a line that starts at a point (an endpoint) and extends infinitely in one direction.
State endpoint first, then another point on ray with on top L A B S K

22. Drawing Lines, Segments, and Rays
Draw three noncollinear points J, K, L. Then draw JK, KL and L J.
SOLUTION K L J
Draw J, K, and L 1 2
Draw JK. 3
Draw KL. 4
Draw LJ.

23. Practice A B C 2
D E F G

24. Practice
On your own complete the worksheet

25. Guided Practice