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Khan Academy
Khan Academy: Worked Examples: Geometry: Ca Geometry: Proof by Contradiction
Students explore how to do a geometric proof by contradiction.
Sophia Learning
Sophia: Introduction to Geometric Proof
Explore the structure and how to complete a flow proof and a two-column proof.
Sophia Learning
Sophia: Proof (Harder)
This geometry resource discusses two types of proof. Video lessons demonstrating a flow proof and a two-column proof are included.
Sophia Learning
Sophia: Types of Proofs
Explore the similarities and differences between paragraph proofs, flow chart proofs, and two-column proofs. Assess learning with a quiz.
PatrickJMT
Patrick Jmt: Proof by Induction Example 1
Video tutorial features examples and tips to provide proof by induction. [6:29]
Sophia Learning
Sophia: Types of Proofs: Lesson 1
Introduce flow chart proofs, paragraph proofs, and two-column proofs. This lesson is 1 of 5 in the series titled "Types of Proofs."
Sophia Learning
Sophia: Types of Proofs: Lesson 4
This lesson will introduce flow chart proofs, paragraph proofs, and two-column proofs, and explain the similarity and differences between the different types of proofs. It is 4 of 5 in the series titled "Types of Proofs."