# Ch 2: McDougal Littell Geometry Chapter 2: Reasoning and Proof

The Reasoning and Proof chapter of this McDougal Littell Geometry Textbook companion course helps students learn essential geometry lessons of reasoning and proof. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Reasoning and Proof textbook chapter.

## How it works:

• Identify the lessons in the McDougal Littell Geometry Textbook Reasoning and Proof chapter with which you need help.
• Find the corresponding video lessons within this companion course chapter.
• Watch fun videos that cover the reasoning and proof topics you need to learn or review.
• Complete the quizzes to test your understanding.
• If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

## Students will learn:

• Critical thinking and logic in mathematics
• Conditional statements in math
• Rewriting conditional statements in if-then form
• Logical math connectors: conjunctions and disjunctions
• Logical equivalence: converse, inverse, contrapositive and counterexample
• Writing postulates about points, lines and planes using conditional statements
• Biconditional statements
• Using symbolic notation
• Inductive and deductive reasoning in geometry
• The law of detachment
• The law of syllogism
• Properties and postulates of geometric figures
• Algebraic laws and geometric postulates
• The distributive property and algebraic expressions
• Using properties of length and measure
• Properties of segment congruence
• Writing a paragraph proof
• Using congruence of segments
• Properties of angle congruence
• Right angle congruence theorem
• Congruent supplements theorem
• Congruent complements theorem
• Linear pair postulate
• Vertical angles theorem

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8 Lessons in Chapter 2: McDougal Littell Geometry Chapter 2: Reasoning and Proof
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken
More Exams
There are even more practice exams available in McDougal Littell Geometry Chapter 2: Reasoning and Proof.

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