Introduction to Proof 2
嚜澠ntroduction to
Proof
The popular
game Sudoku
seems so simple but
requires the use of
logic to come up
with a solution.
2.1
2
A Little Dash of Logic
Foundations for Proof . . . . . . . . . . . . . . . . . . . . . . . . 155
2.2
And Now From a New Angle
Special Angles and Postulates . . . . . . . . . . . . . . . . . 171
2.3
Forms of Proof
Paragraph Proof, Two-Column Proof, Construction
Proof, and Flow Chart Proof . . . . . . . . . . . . . . . . . . . 191
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2.4
What's Your Proof?
Angle Postulates and Theorems . . . . . . . . . . . . . . . . 213
2.5
A Reversed Condition
Parallel Line Converse Theorems . . . . . . . . . . . . . . . 225
153
Chapter 2 Overview
X
X
X
X
X
X
X
X
X
X
Technology
Highlights
Talk the Talk
Pacing
Peer Analysis
2
TEKS
Models
Lesson
Worked Examples
This chapter focuses on the foundations of proof. Paragraph, two-column, construction, and flow chart proofs are
presented. Proofs involving angles and parallel lines are completed.
This lesson introduces key components
of proof.
2.1
Foundations
for Proof
4.B
4.C
2
Questions focus on identifying, comparing,
and contrasting inductive and deductive
reasoning. Students identify the hypothesis
and conclusion of conditional statements and
explore their truth values.
This lesson addresses complementary,
supplementary, adjacent, linear pair, and
vertical angles, and includes a discussion of
Euclidean and non-Euclidean geometries.
Special Angles
and Postulates
2.3
Paragraph
Proof, TwoColumn Proof,
Construction
Proof, and
Flow Chart
Proof
2.4
153A
Angle
Postulates and
Theorems
Chapter 2
4.A
4.D
2
Questions focus on calculating angle
measures and identifying types of angles.
The lesson also addresses the difference
between postulates and theorems, and
the difference between Euclidean and
non-Euclidian geometries.
This lesson presents the various forms
of proof.
4.A
5.B
6.A
4.A
5.A
6.A
Introduction to Proof
2
Questions ask students to sketch examples
of the properties of equality. Then, students
use the various forms of proof to prove
theorems involving right, supplementary,
complementary, and vertical angles.
This lesson focuses on proving postulates
and theorems involving angles formed by
parallel lines and a transversal.
2
Questions ask students to complete proofs
that involve corresponding, alternate interior,
alternate exterior, same-side interior, and
same-side exterior angles.
X
X
? Carnegie Learning
2.2
Parallel Line
Converse
Theorems
Technology
This lesson focuses on proving converse
postulates and theorems involving angles
formed by parallel lines and a transversal.
1
Questions ask students to complete proofs
that involve corresponding, alternate interior,
alternate exterior, same-side interior, and
same-side exterior angles.
2
X
X
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2.5
4.A
4.B
5.A
5.B
6.A
Talk the Talk
Highlights
Peer Analysis
Pacing
Worked Examples
TEKS
Models
Lesson
Chapter 2 Introduction to Proof
153B
Skills Practice Correlation for Chapter 2
Lesson
Problem Set
Objectives
Vocabulary
2
2.1
Foundations for
Proof
1每6
Identify specific and general information and conclusions in
problem situations
7 每 12
Determine whether inductive or deductive reasoning is used in situations
13 每 18
Identify, compare, and contrast inductive and deductive reasoning
in situations
19 每 24
Write statements in propositional form
25 每 30
Identify the hypothesis and conclusion of conditional statements
31 每 34
Answer questions about conditional statements
35 每 38
Draw diagrams to represent conditional statements and write the hypothesis
and conclusion
2.2
Special Angles
and Postulates
1每4
Draw angles supplementary to given angles with a common side
5每8
Draw angles supplementary to given angles without a common side
9 每 12
Draw angles complementary to given angles with a common side
13 每 16
Draw angles complementary to given angles without a common side
17 每 22
Solve for unknown angle measures
23 每 26
Determine the measures of two angles given descriptions
27 每 30
Determine whether angles are adjacent angles
31 每 34
Determine whether two angles form a linear pair
35 每 38
Identify pairs of vertical angles
39 每 44
Identify the postulate that confirms statements about angles and segments
45 每 50
Complete statements about angles and segments using postulates
Vocabulary
2.3
153C
Paragraph
Proof, TwoColumn Proof,
Construction
Proof, and
Flow Chart
Proof
Chapter 2
1 每 12
Identify properties of equality in examples
13 每 18
Write example statements using properties of equality
19 每 22
Rewrite conditional statements by separating the hypothesis and conclusion
23 每 28
Prove statements using construction, paragraph proofs, flow chart proofs,
and two-column proofs
29 每 34
Rewrite proofs as another type of proof
Introduction to Proof
? Carnegie Learning
Vocabulary
Lesson
Problem Set
Objectives
Vocabulary
2.4
Angle
Postulates and
Theorems
1每4
Identify pairs of corresponding angles
5 每 12
Write conjectures
13 每 16
Draw and label diagrams to illustrate theorems
17 每 20
Write ※Given§ and ※Prove§ statements using diagrams and descriptions
21 每 24
Create proofs of statements about angle relationships
25 每 28
Write the theorem illustrated by diagrams
2
Vocabulary
Parallel Line
Converse
Theorems
Write the converse of postulates and theorems
5 每 10
Write the converse of statements
11 每 14
Draw and label diagrams to illustrate theorems
15 每 18
Write ※Given§ and ※Prove§ statements using diagrams and descriptions
19 每 22
Create proofs of statements
? Carnegie Learning
2.5
1每4
Chapter 2
Introduction to Proof
153D
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