1. Beat the Computer! Geometry Vocabulary for Unit 2
Chris Giovanello, LBUSD Math Curriculum Office, 2004

2. Chris Giovanello, LBUSD Math Curriculum Office, 2004
Directions:
A slide will appear with a term
Say the definition aloud before the computer can answer (5 sec.)
You will hear a sound when the slide changes
Chris Giovanello, LBUSD Math Curriculum Office, 2004

3. Chris Giovanello, LBUSD Math Curriculum Office, 2004
conditional
Chris Giovanello, LBUSD Math Curriculum Office, 2004

4. another name for an if-then statement
pg. 68
conditional:
another name for an if-then statement
If it is raining, then I will need my umbrella.
Chris Giovanello, LBUSD Math Curriculum Office, 2004

5. Chris Giovanello, LBUSD Math Curriculum Office, 2004
hypothesis
Chris Giovanello, LBUSD Math Curriculum Office, 2004

6. the part following the “if” in an if-then statement
pg. 68
hypothesis:
the part following the “if” in an if-then statement
If it is raining, then I will need my umbrella.
Chris Giovanello, LBUSD Math Curriculum Office, 2004

7. Chris Giovanello, LBUSD Math Curriculum Office, 2004
conclusion
Chris Giovanello, LBUSD Math Curriculum Office, 2004

8. the part following the “then” in an if-then statement
pg. 68
conclusion:
the part following the “then” in an if-then statement
If it is raining, then I will need my umbrella.
Chris Giovanello, LBUSD Math Curriculum Office, 2004

9. Chris Giovanello, LBUSD Math Curriculum Office, 2004
truth value
Chris Giovanello, LBUSD Math Curriculum Office, 2004

10. the value, true or false, of a conditional statement
pg. 69
truth value:
the value, true or false, of a conditional statement
Chris Giovanello, LBUSD Math Curriculum Office, 2004

11. Chris Giovanello, LBUSD Math Curriculum Office, 2004
converse
Chris Giovanello, LBUSD Math Curriculum Office, 2004

12. Chris Giovanello, LBUSD Math Curriculum Office, 2004
pg. 69
converse:
a new statement that switches the hypothesis and conclusion of the original conditional statement
Chris Giovanello, LBUSD Math Curriculum Office, 2004

13. Chris Giovanello, LBUSD Math Curriculum Office, 2004
biconditional
Chris Giovanello, LBUSD Math Curriculum Office, 2004

14. Chris Giovanello, LBUSD Math Curriculum Office, 2004
pg. 75
biconditional:
a statement made by connecting the conditional and its converse with the words “if and only if”
Chris Giovanello, LBUSD Math Curriculum Office, 2004

15. Chris Giovanello, LBUSD Math Curriculum Office, 2004
deductive reasoning
Chris Giovanello, LBUSD Math Curriculum Office, 2004

16. Chris Giovanello, LBUSD Math Curriculum Office, 2004
pg. 82
deductive reasoning:
the process of reasoning logically from given statements to a conclusion
Chris Giovanello, LBUSD Math Curriculum Office, 2004

17. Chris Giovanello, LBUSD Math Curriculum Office, 2004
Law of Detachment
Chris Giovanello, LBUSD Math Curriculum Office, 2004

18. pg. 83
Law of Detachment:
If a conditional is true and its hypothesis is true, then its conclusion is true.
If p  q is a true statement and p is true, then q is true.
Chris Giovanello, LBUSD Math Curriculum Office, 2004

19. Chris Giovanello, LBUSD Math Curriculum Office, 2004
Law of Syllogism
Chris Giovanello, LBUSD Math Curriculum Office, 2004

20. pg. 83
Law of Syllogism:
allows you to state a conclusion from two true conditional statements when the conclusion of one statement is the hypotheses of the other.
If p  q and q  r are true statements, then p  r is true.
Chris Giovanello, LBUSD Math Curriculum Office, 2004

21. Chris Giovanello, LBUSD Math Curriculum Office, 2004
vertical angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

22. two angles whose sides are opposite rays
vertical angles:
two angles whose sides are opposite rays
pg. 96 1 2
1 and 2 are vertical angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

23. Chris Giovanello, LBUSD Math Curriculum Office, 2004
adjacent angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

24. Chris Giovanello, LBUSD Math Curriculum Office, 2004
adjacent angles:
two coplanar angles that share a common vertex and side, but have no common interior points
pg. 96 1 2 3 4
 1 &  2 are adjacent angles
 3 &  4 are adjacent angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

25. Chris Giovanello, LBUSD Math Curriculum Office, 2004
complementary angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

26. complementary angles: two angles whose sum measures 90º
pg. 96 1 2
55
35 X Y
1 & 2 are complementary
X & Y are complementary
Chris Giovanello, LBUSD Math Curriculum Office, 2004

27. Chris Giovanello, LBUSD Math Curriculum Office, 2004
supplementary angles
Chris Giovanello, LBUSD Math Curriculum Office, 2004

28. supplementary angles: two angles whose sum measures 180º
pg. 96
45 Y
135 1 2 X
X & Y are supplementary
1 & 2 are supplementary
Chris Giovanello, LBUSD Math Curriculum Office, 2004

29. Chris Giovanello, LBUSD Math Curriculum Office, 2004
linear pair
Chris Giovanello, LBUSD Math Curriculum Office, 2004

30. Chris Giovanello, LBUSD Math Curriculum Office, 2004
linear pair:
if two adjacent angles share one side but the two sides they do not share are not opposite rays 1 2
1 & 2 are a linear pair
Chris Giovanello, LBUSD Math Curriculum Office, 2004

31. Chris Giovanello, LBUSD Math Curriculum Office, 2004
theorem
Chris Giovanello, LBUSD Math Curriculum Office, 2004

32. a statement that must be proved to be true
pg. 98
theorem:
a statement that must be proved to be true
Chris Giovanello, LBUSD Math Curriculum Office, 2004

33. Chris Giovanello, LBUSD Math Curriculum Office, 2004
paragraph proof
Chris Giovanello, LBUSD Math Curriculum Office, 2004

34. a proof written as sentences in a paragraph
pg. 98
paragraph proof:
a proof written as sentences in a paragraph
Chris Giovanello, LBUSD Math Curriculum Office, 2004