Lesson Plan


Students will use both inductive and deductive reasoning to prove the vertical angles conjecture


  • Mathematics > General
  • Mathematics > Geometry

Education Levels:

  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12


geometry measurement coordinate conjecture pythagorean theorum trapezoid triangle triangles



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Public - Available to anyone

License Deed:

Creative Commons Attribution 3.0


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Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 2, as of 2009-07-27.

Component Ratings:

Technical Completeness: 2
Content Accuracy: 2
Appropriate Pedagogy: 2

Reviewer Comments:

There are problems with this lesson. For starters, it’s sloppily prepared, with paragraphs repeating themselves. The notion of an inductive proof is suspect; there’s really no such thing. We can make conjectures based on induction and the conjectures may be powerful, but they prove nothing. The author would have been on firmer ground noting what can be learned by induction and what by deduction.

Not Rated Yet.

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