1. SMOTD
Angles
Pre-Algebra
Lesson 7.2
Rays and Angles

2. Whadda ya know 'bout...
Rays
Angles

4. Review: Points, Lines, Points of Intersection
Points:
A
B
C
D
E

5. Review: Points, Lines, Points of Intersection
Lines:
AC
BC
CA
CB
CD CE
DC EC
AD
BE
DA
EB

6. Review: Points, Lines, Points of Intersection
Intersection:
C

7. Learn: What is a ray?
Line: extends forever in both directions
A
B
name:
AB
BA
Ray: Begins from an endpoint and extends forever
in one direction
A
B
name:
AB

8. Zayn, Harry, Louis, Liam, Niall

9. Angle: formed by two rays (sides) that share
the same endpoint (vertex)

10. Degrees of Angles
angles
Acute
Right
Obtuse
Less than 90o
90o degrees
Greater than 90o

11. http://www.youtube.com/watch?v=tqIki33mTgs

12. Name this:
TOILET
PORCELAIN THRONE
THE LOO
OVAL OFFICE
APPLE
FRUIT
"DROPPING KIDS
OFF AT THE POOL"
MR. ZITELLO
SPHERE
TEACHER
BREAKFAST
MAN

13. IN MATH, ANGLES HAVE
SEVERAL NAMES TOO

14. Way #1: Using Points
names:
names:

15. Way #2: Using the vertex
L
M
N
names:
names:

16. Way #3: Use a number
L
M
N
names:
names:

17. Trick Question: Which angle is
S?
If 2 or more angles share a vertex, you have to use
three letters OR a numerical to avoid confusion

18. Trivia
Questions

19. Trivia
Questions

20. Trivia
Questions

21. Trivia
Questions

22. Trivia
Questions

30. http://www.mathplayground.com/alienangles.html