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HW- pg. 122-123 (1-3, 5, 7)
Ch 2 Test THURSDAY 10-10-13
www.westex.org HS, Teacher Website
10-8-13
Warm up—Geometry CPA
Complete each sentence.
1. If the measures of two angles are __________,
then the angles are congruent.
2. If two angles form a _________, then they are
supplementary.
3. If two angles are complementary to the same
angle, then the two angles are ______________.
GOAL:
I will be able to:
1. Write flowchart and paragraph proofs.
2. Prove geometric theorems by using deductive
reasoning.
HW- pg. 122-123 (1-3, 5, 7)
Ch. 2 Test THURSDAY 10-8-13
www.westex.org HS, Teacher Website
Name _________________________
Geometry CPA
2-7 Flowchart and Paragraph Proofs
Date ________
A second style of proof is a ____________________, which uses boxes and arrows to show
the structure of the proof.
The justification for each step is written below the box.
Example 1: Use the given flowchart proof to write a two-column proof.
Statements
Reasons
YOU TRY:
Statements
Reasons
A ___________________________________ is a style of proof that presents the steps
of the proof and their matching reasons as sentences in a paragraph. Although this style of
proof is less formal than a two-column proof, you still must include every step.
Example 3: Reading a Paragraph proof
Statements
1.
Reasons
2.
3.
4.
YOU TRY:
Use the given paragraph proof to write a two-column proof.
Statements
1.
2.
3.
4.
5.
6.
7.
8.
Reasons