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Sec Math 2A Unit 7
Formal Proofs

Unit 7 Lesson 2 Proofs about Angles

Recording Part 1

Quick Check Redo

Recording Part 2

Unit 7 Lesson 3 Triangle Proofs

Class Recording

Quick Check Redo

Unit 7 Lesson 4 Parallelogram Proofs

Class Recording

Quick Check Redo

Unit 7 Lesson 5 Converse Parallelogram Proofs

Class Recording

Quick Check Redo

Unit 7 Lesson 6 Medians of a Triangle

Class Recording

Quick Check Redo

Unit 7 Lesson 7 Rectangle Proofs

Class Recording

Quick Check Redo

Unit 7 Lesson 8 Formal Proofs Apply (Sample Work)***

Practice Problems Recording

Unit 7 Lesson 9-10 Formal Proofs Review and Test

Practice Test Recording

Related Resources from Last Year

Vertical Angles

Angles Formed by a Transversal

Proofs about Perpendicular Bisectors

The Triangle Sum Theorem

The Isosceles Triangle Theorem

Congruency in Parallelograms

Diagonals of a Parallelogram

Diagonals of a Rectangle

**** I want to provide these resources for Sample Works, but it is honestly a bit aspirational with what all I need to do, so they may not be available this year. ****

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