Splash Screen

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Splash Screen
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Lesson Menu
Five-Minute Check (over Lesson 26) Then/Now Postu
late 2.8 Ruler Postulate Postulate 2.9
Segment Addition Postulate Example 1 Use the
Segment Addition Postulate Theorem 2.2
Properties of Segment Congruence Proof
Transitive Property of Congruence Example
2 Real-World Example Proof Using Segment
Congruence
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5-Minute Check 1
State the property that justifies the statement.
2(LM NO) 2LM 2NO
A. Distributive Property B. Addition
Property C. Substitution Property D. Multiplicatio
n Property

1. A
2. B
3. C
4. D

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5-Minute Check 2
State the property that justifies the
statement.If m?R m?S, then m?R m?T m?S
m?T.
A. Distributive Property B. Substitution
Property C. Addition Property D. Transitive
Property

1. A
2. B
3. C
4. D

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5-Minute Check 3
A. Multiplication Property B. Division
Property C. Distributive Property D. Substitution
Property

1. A
2. B
3. C
4. D

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5-Minute Check 4
State the property that justifies the statement.
m?Z m?Z
A. Reflexive Property B. Symmetric
Property C. Transitive Property D. Substitution
Property

1. A
2. B
3. C
4. D

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5-Minute Check 5
State the property that justifies the statement.
If BC CD and CD EF, then BC EF.
A. Reflexive Property B. Symmetric
Property C. Substitution Property D. Transitive
Property

1. A
2. B
3. C
4. D

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5-Minute Check 6
Which statement shows an example of the Symmetric
Property?
A. x x B. If x 3, then x 4 7. C. If x
3, then 3 x. D. If x 3 and x y, then y 3.

1. A
2. B
3. C
4. D

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Then/Now
You wrote algebraic and two-column proofs.
(Lesson 26)

• Write proofs involving segment addition.

• Write proofs involving segment congruence.

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Concept
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Concept
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Example 1
Use the Segment Addition Postulate
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Example 1
Use the Segment Addition Postulate
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Example 1
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Example 1
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Example 1
A. Addition Property B. Substitution C. Definition
of congruent segments D. Segment Addition
Postulate

1. A
2. B
3. C
4. D

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Concept
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Concept
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Example 2
Proof Using Segment Congruence
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Example 2
Proof Using Segment Congruence
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Example 2
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Example 2
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Example 2
A. Substitution B. Symmetric Property C. Segment
Addition Postulate D. Reflexive Property

1. A
2. B
3. C
4. D

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End of the Lesson