Lesson Planet
Search educational resources
  • Sign In Try It Free
  • AI Teacher Tools
    • Discover Resources Search reviewed educational resources by keyword, subject, grade, type, and more
    • Curriculum Manager (My Content) Manage saved and uploaded resources and folders To Access the Curriculum Manager Sign In or Join Now
    • Browse Resource Directory Browse educational resources by subject and topic
    • Curriculum Calendar Explore curriculum resources by date
    • Lesson Planning Articles Timely and inspiring teaching ideas that you can apply in your classroom
    • Our Story
    • Frequently Asked Questions
    • Testimonials
    • Contact Us
  • Pricing
  • School Access
    • Your school or district can sign up for Lesson Planet — with no cost to teachers
      Learn More
  • Sign In
  • Try It Free

Hi, what do you want to do?

Create a lesson plan
Create a lesson plan
Generate resources with 80+ AI teacher tools
Generate resources with 80+ AI teacher tools
Search 200,000 instructional videos
Search 200,000 instructional videos
Find a teaching resource
Find a teaching resource
Converse of the Pythagorean Theorem Lesson PlanConverse of the Pythagorean Theorem Lesson Plan
Publisher
EngageNY
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
8th
Subjects
Math
3 more...
Resource Type
Lesson Plans
Audiences
For Teacher Use
1 more...
Duration
1 hr
Instructional Strategies
Guided Practice
2 more...
Technology
Presentation
Year
2015
Usage Permissions
Creative Commons
BY-NC-SA: 3.0
cc
Language
English, Arabic
Lesson Plan

Converse of the Pythagorean Theorem

Curated and Reviewed by Lesson Planet
This Converse of the Pythagorean Theorem lesson plan also includes:
  • Converse of the Pythagorean Theorem (Doc)
  • Converse of the Pythagorean Theorem (PDF)
  • Converse of the Pythagorean Theorem (Doc)
  • Grade 8 Module 7: Teacher Materials
  • Grade 8 Module 7: Student Materials
  • Grade 8 Module 7: Copy Ready Materials
  • Math Fluency Support for Grades 6-8
  • Answer Key
  • Join to access all included materials

Discover a new application of the Pythagorean Theorem. Learners prove and apply the converse of the Pythagorean Theorem in the 17th instructional activity in a 25-part series. The examples ask learners to verify right triangles using the converse of the Pythagorean Theorem and find unknown side lengths using the Theorem.

10 Views 7 Downloads
CCSS: Designed

Concepts

pythagorean theorem, converse, geometric proofs, problem solving strategies, problem solving techniques

Additional Tags

math

Instructional Ideas

  • Have your classes use protractors to create right triangles, measure the sides, and test the Pythagorean Theorem
  • Write answers in both radical and decimal form to emphasize the relationship

Classroom Considerations

  • Pupils should have an understanding of converse statements and the Pythagorean Theorem

Pros

  • Provides a detailed teaching guide with explanations and suggestions
  • Includes both opening and closing exercises

Cons

  • None

Common Core

8.G.B.6 8.G.B.7 8.G.B.8 MP3

See similar resources:

Instructional Video

Special Right Triangle 45-45-90: Lesson

CK-12 Foundation
Square roots connect squares and right triangles. Using the Pythagorean Theorem, the video shows the relationship between the sides and hypotenuse of a 45-45 right triangle. The portion of a larger geometry playlist applies the...
4 mins 8th - 11th Math
Instructional Video

Pythagorean Theorem, Right Triangles and Trigonometry, Geometry

Khan Academy
In this video, Sal introduces the Pythagorean Theorem to viewers, crossing into the realm of geometry. He uses several examples, including right triangles, to illustrate the applications and uses of the Pythagorean Theorem.
13 mins 7th - 11th Math
Instructional Video

Applications of the Pythagorean Theorem: Lesson

CK-12 Foundation
The Pythagorean Theorem works for something other than right triangles; show your class all it can do. Using information from the Pythagorean Theorem, the video shows how to determine whether a triangle is an acute or obtuse triangle....
4 mins 8th - 11th Math
CCSS: Adaptable
Instructional Video

How Do You Determine if a Triangle Is a Right Triangle if You Know its Sides?

Curated OER
Use the Pythagorean Theorem formula to check if this given triangle, with the given lengths of each side, is a right triangle. It's as simple as plugging the given values into the formula and doing the math to see if the solution checks...
3 mins 6th - 10th Math
Instructional Video

What are the Legs and Hypotenuse of a Right Triangle?

Curated OER
What are all the parts of a right triangle called? What makes it a right triangle? Legs? Triangles have legs? Hypotenuse? Pythagorean Theorem? The instructor diagrams and identifies all the parts of a right triangle for you.
2 mins 6th - 10th Math
Instructional Video

How Do You Find a Missing Side of a Right Triangle Using Cosine?

Curated OER
Trigonometry? What's trigonometry. Well, something to do with triangles, right? Right! Right triangles! In this problem, find the missing length of one of the sides. So set this up as a ratio: cosine(A) = adjacent side length divided by...
5 mins 6th - 11th Math
Instructional Video

How Do You Find the Length of a Leg of a Right Triangle?

Curated OER
A right triangle. Two given measurements for two side lengths and one unknown length. Use the Pythagorean theorem to solve this problem and find the missing value. Squares and square roots are used in this problem and don't worry when...
4 mins 6th - 9th Math
Instructional Video

What is the Pythagorean Theorem?

Curated OER
Need to find the length of a side of a right triangle? Just use the Pythagorean Theorem! Follow along as the tutor defines the Theorem, explains how it works, then uses it to determine the missing length of a right triangle. 
4 mins 6th - 11th Math
Lesson Plan

Applying the Pythagorean Theorem

Curated OER
Learners use the Pythagorean Theorem to find the distances between two points. Use this Pythagorean Theorem lesson plan to have learners find the distances on a coordinate plane in small groups.
6th - 8th Math
Instructional Video

Virtual Nerd: How Do You Determine if a Triangle Is a Right Triangle

Virtual Nerd
In this video lesson a students learns how to determine if a triangle is a right triangle by using the Pythagorean Theorem.
7th - 9th Math
CCSS: Adaptable
Try It Free
© 1999-2026 Learning Explorer, Inc.
Teacher Lesson Plans, Worksheets and Resources

Sign up for the Lesson Planet Monthly Newsletter

Open Educational Resources (OER)

  • Health
  • Language Arts
  • Languages
  • Math
  • Physical Education
  • Science
  • Social Studies
  • Special Education
  • Visual and Performing Arts
View All Lesson Plans

Discover Resources

  • Our Review Process
  • How it Works
  • How to Search
  • Create a Collection

Manage Curriculum

  • Edit a Collection
  • Assign to Students
  • Manage My Content
Contact Us Site Map Privacy Policy Terms of Use