Warm up
7
Copyright © by Holt, Rinehart and Winston. All Warm up Identify the Property 1. AB CD given CD AB __________________ 2. AB = CD given AB + BC = CD + BC __________________ 3. B C and C D given B D __________________
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Warm up. Identify the Property 1 . AB CDgiven CD AB __________________ 2 . AB = CDgiven AB + BC = CD + BC__________________ 3 . B C and C D given B D __________________. Plan of reasoning to complete geometric proofs - PowerPoint PPT Presentation
Transcript of Warm up
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
Warm upIdentify the Property1. AB CD given
CD AB __________________
2. AB = CD given
AB + BC = CD + BC __________________
3. B C and C D given
B D __________________
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
Section 2-4 continued Proofs
2.4 Building a System of Geometry Knowledge
Plan of reasoning to complete geometric proofs
a) What is given, what can be assumed from the diagram?
b) What conclusions can be made from each given statement?
c) What reason can you give to justify each conclusion?
d) What order can you prove these conclusions?
e) How can you arrive at what you are asked to prove?
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
Proof
2.4 Building a System of Geometry Knowledge
5. Given: PQ bisects AB at point R and AR RQ
Prove: RB RQ
PB
Q
A
R
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
Proof
2.4 Building a System of Geometry Knowledge
Statements Reasons
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
6. Given: m5 = m 8 and m6 = m7Prove: mABC = mEFG
2.4 Building a System of Geometry Knowledge
5
6 7
8
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
2.4 Building a System of Geometry Knowledge
Statements Reasons
Copyright © by Holt, Rinehart and Winston. All Rights Reserved.
assignment
2.4 Building a System of Geometry Knowledge
Intro to Proof Worksheet
