parallel lines proof day 4 · swbat: write proofs involving parallel and perpendicular lines , ∡...

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SWBAT: Write proofs involving Parallel and Perpendicular lines Parallel Lines Proof Day 4

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Page 1: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

Parallel Lines Proof Day 4

Page 2: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Given

∡𝐁𝐀𝐂 ≅ ∡𝑩𝑪𝑨 ∡𝐁𝐃𝐄 ≅ ∡𝑩𝑨𝑪

𝑫𝑬 ∥ 𝑨𝑪 Converse of Corresponding ∡ Thrm

Transitive (1,2)

Page 3: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

Page 4: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

Page 5: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

Page 6: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

Page 7: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

2

1 a

b

q

Given: Lines a and b cut by transversal q. ∡𝟏 ≅ ∡𝟐

Prove:

𝒂 ∥ 𝒃

Page 8: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Given:

∡𝟏 ≅ ∡𝟐

Prove:

𝒂 ∥ 𝒃

∡𝟏 ≅ ∡𝟐 3

∡𝟏 ≅ ∡𝟑

∡𝟐 ≅ ∡𝟑

𝒂 ∥ 𝒃

Given

Vertical ∡′𝒔 ≅

Transitive (1,2)

Converse of Corresponding ∡ Thrm

Page 9: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Page 10: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Given

𝑨𝑩 ≅ 𝑪𝑫

∡𝐁𝐃𝐂 ≅ ∡𝑫𝑩𝑨

𝑫𝑩 ≅ 𝑫𝑩 𝜟𝑨𝑫𝑩 ≅ 𝜟𝑪𝑫𝑩

𝑨𝑫 ≅ 𝑪𝑩

∡𝐀𝐃𝐁 ≅ ∡𝑪𝑩𝑫

𝑨𝑫 ∥ 𝑩𝑪

Given

AIA Thrm

Reflexive

SAS (2,3,4)

CPCTC

CPCTC

Conv. Of AIA Thrm

Page 11: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Given

∡𝟏 ≅ ∡𝑨

∡𝟐 ≅ ∡𝑩 AIA Thrm

∡𝐀 ≅ ∡𝑩 Transitive (2,3)

Page 12: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Given

∡𝐂 ≅ ∡𝑪𝑩𝑬

∡𝐀 ≅ ∡𝑬𝑩𝑫

∡𝑪𝑩𝑬 + ∡𝑬𝑩𝑫 = ∡𝑪𝑩𝑫

∡𝑨 + ∡𝑪 = ∡𝑪𝑩𝑫

AIA Theorem

Corresponding ∡ Thrm

Partition Postulate

Substitution (2,3)

Page 13: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Page 14: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Page 15: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Page 16: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

Parallel Lines Proof Day 5

Page 17: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Page 18: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

,

Page 19: Parallel Lines Proof Day 4 · SWBAT: Write proofs involving Parallel and Perpendicular lines , ∡ Given ≅∡ ∡ ≅∡ ∥ Converse of Corresponding ∡ Thrm Transitive (1,2)

SWBAT: Write proofs involving Parallel and Perpendicular lines

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