'Reflexive property' diaporamas de présentation

2.1 Conditional Statements

2.1 Conditional Statements. Day 1 Part 1 CA Standards 1.0, 3.0 . Warmup. State whether each sentence is true or false. If you live in Los Angeles, then you live in California. If you live in California, then you live in Los Angeles. If today is Wednesday, then tomorrow is Thursday.

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Ch 8 Summary . . . and why SSA and AAA are NOT ? Congruence Methods of Proof!

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5.1 Perpendiculars and Bisectors

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What number goes in the box?

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Identity and Equality Properties

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4.5 Using Congruent Triangles

4.5 Using Congruent Triangles. Geometry. Objectives:. Use congruent triangles to plan and write proofs. Use congruent triangles to prove constructions are valid. Assignment:. Pgs. 232-234 #1-21 all. Planning a proof.

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6.2 Properties of Parallelograms

6.2 Properties of Parallelograms. Geometry Mrs. Spitz Spring 2005. Objectives:. Use some properties of parallelograms. Use properties of parallelograms in real-lie situations such as the drafting table shown in example 6. Assignment:. pp. 333-335 #2-37 and 39. In this lesson . . . .

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6.2 Properties of Parallelograms

6.2 Properties of Parallelograms. Geometry Mrs. Spitz Spring 2005. Objectives:. Use some properties of parallelograms. Use properties of parallelograms in real-lie situations such as the drafting table shown in example 6. Assignment:. pp. 333-335 #2-37 and 39. In this lesson . . . .

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6.2 Properties of Parallelograms

6.2 Properties of Parallelograms. Geometry Mrs. Spitz Spring 2005. Objectives:. Use some properties of parallelograms. Use properties of parallelograms in real-lie situations such as the drafting table shown in example 6. Assignment:. pp. 333-335 #2-37 and 39. In this lesson . . . .

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4-4

4-4. Triangle Congruence: SSS and SAS. Holt Geometry. AB , AC , BC. QR ? LM , RS ? MN , QS ? LN , ? Q ? ? L , ? R ? ? M , ? S ? ? N. Warm Up 1. Name the angle formed by AB and AC . 2. Name the three sides of ? ABC .

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4.5 Segment and Angle Proofs

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5.6 Inequalities in 2 Triangles

5.6 Inequalities in 2 Triangles. & Indirect Proof. Vocabulary/Theorems. Hinge Theorem:

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NAME THAT PROPERTY!

NAME THAT PROPERTY!. For each of the equations below, tell which property allows us to make the change shown. NAME THAT PROPERTY!. 4(2+x)=8+4x Distributive Property 2y + 3x + 6y = 2y + 6y + 3x Commutative Prop.

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EXAMPLE 1

Write a congruence statement for the triangles. Identify all pairs of congruent corresponding parts. The diagram indicates that. JKL TSR . Corresponding angles. J T , ? K S , L R. Corresponding sides. JK TS , KL SR , LJ RT. EXAMPLE 1.

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2-5 Reasoning in Algebra and Geometry

2-5 Reasoning in Algebra and Geometry. *I can identify and use the properties of equality. (addition, subtraction, multiplication, division, reflexive, symmetric, transitive, and substitution.) *I can use the distributive property to justify combining like terms

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1.3 Solving Equations

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Warm Up

Warm Up. Warm Up Answers. Theorem and Proof. A theorem is a statement or conjecture that has been shown to be true. Theorems can be used like a definition or postulate to justify other statements are true.

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EXAMPLE 1

Write a proof. GIVEN. KL NL , KM NM. PROVE. KLM NLM. Proof. KL NL and KM NM. It is given that. LM LN . By the Reflexive Property,. So, by the SSS Congruence Postulate,. KLM NLM. EXAMPLE 1. Use the SSS Congruence Postulate. DFG HJK.

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EXAMPLE 1

BC DA , BC AD. ABC CDA. STATEMENTS. REASONS. S. BC DA. Given. Given. BC AD. BCA DAC. A. Alternate Interior Angles Theorem. S. AC CA. Reflexive Property of Congruence. EXAMPLE 1. Use the SAS Congruence Postulate. Write a proof. GIVEN. PROVE. EXAMPLE 1.

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Name the parts of their sides that DFG and EHG share.

Identify the overlapping triangles. . Parts of sides DG and EG are shared by DFG and EHG . . These parts are HG and FG , respectively. Using Corresponding Parts of Congruent Triangles. LESSON 4-7. Additional Examples.

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