CK-12 Foundation
Ck 12: Algebra: Solving Equations Using the Pythagorean Theorem
[Free Registration/Login may be required to access all resource tools.] Use the Pythagorean Theorem to find a right triangle's missing side lengths.
Cut the Knot
Cut the Knot!: Analogues and Generalization of the Pythagorean Theorem
This site discusses the theorems and other findings which are directly related to the fundamental Pythagorean theorem. Be sure to click on the link to information on Pythagorean theorem to find several proofs of the theorem.
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Proving the Pythagorean Theorem
This Ask Dr. Math site explains how to prove the Pythagorean Theorem. Dr. Math gives three variations for proving the theorem.
Ducksters
Ducksters: Kids Math: Pythagorean Theorem
Understand how the Pythagorean Theorem can help us solve the lengths of a triangle. Learn how it works, terms, tricks, and examples on this site.
University of British Columbia
University of British Columbia: Proof of the Pythagorean Theorem
A geometric model that proves the Pythagorean Theorem in a step-by-step diagram that students can advance at their own pace. Requires Java.
McGraw Hill
Glencoe: Self Check Quizzes 2: The Pythagorean Theorem
Test your knowledge of the Pythagorean Theorem with these practice problems. Each question has a "Hint" link to help. At the bottom of the page click the "Check It" button and the correct answer for each problem appears beside it. Also,...
Walter Fendt
Walter Fendt: Pythagorean Theorem (2)
A short interactive activity to visualize the Pythagorean Theorem.
Math Aids
Math Aids: Pythagorean Theorem Worksheets
Great resource to practice and strengthen math skills pertaining to the Pythagorean Theorem. Math worksheets are printable, may be customized, and include answer keys.
Other
The mathlab.com: Ultimate Pythagorean Theorem Test
Open the nine clue boxes. Solve the problems inside. Each successful solution will supply you with a clue to use in the decoder grid to determine the password to claim the treasure.
Alabama Learning Exchange
Alex: The Pythagorean Theorem in the Real World
The introduction of this lesson plan has students verifying the famous Pythagorean Theorem with a hands-on proof. Students will then apply the Theorem in one of two ways: by solving for the side lengths of a right triangle and by...
Alabama Learning Exchange
Alex: Pythagorean Theorem: Prove It (Part 2)
In this lesson, eighth grade students will use their new found knowledge of the Pythagorean Theorem and relate it to the world around them. They will work in cooperative groups to solve problems using the Pythagorean Theorem. Adobe PDF...
Varsity Tutors
Varsity Tutors: Hotmath: Graphing Calculator Practice Problems Pythagorean Theorem
Practice using your graphing calculator for real number problems, including the Pythagorean Theorem. If you get stumped or if you would like to check your work, then select the View Solution button, which is located directly under each...
Oswego City School District
Regents Exam Prep Center: Pythagorean Theorem
Who was Pythagoras and what is his theorem? Explore this concept and its relationship to the measurement of a right triangle in this test prep lesson plan. The lesson includes an interactive worksheet where learners discover the answers...
Purple Math
Purplemath: The Pythagorean Theorem
Defines the Pythagorean Theorem, and demonstrates how to use this Theorem in connection with right-angled triangles.
McGraw Hill
Glencoe Mathematics: Online Study Tools: Using the Pythagorean Theorem
This site gives a short interactive quiz which allows students to self-assess their understanding of the concept of using the pythagorean theorem.
CK-12 Foundation
Ck 12: Distance Formula and the Pythagorean Theorem
[Free Registration/Login Required] Students use the distance formula and the pythagorean theorem to determine the quickest route to the treasure. Click learn more to watch a video and click challenge me to answer a practice question.
Alabama Learning Exchange
Alex: Pythagorean Theorem: Prove It
During this lesson, eighth grade students will be introduced to the Pythagorean Theorem: a2+b2=c2. They will construct a right triangle on graph paper and draw squares on each side of the triangle. A quiz link requires Java, and another...
University of California
Berkeley University: Math Site: Polygon Dissection
Here is a link to a visual representation of the Pythagorean theorem.
Texas Education Agency
Texas Gateway: Applying Pythagorean Triples to Solve Problems
Given verbal and pictorial representations of problem situations, the student will apply patterns from right triangles whose sides are Pythagorean Triples to solve the problems.
Cuemath
Cuemath: Pythagoras Theorem
In this lesson, you will learn about the Pythagoras theorem, its derivations, and equations followed by solved real-world problems on the Pythagoras theorem triangle and squares.
Cuemath
Cuemath: Hypotenuse Leg Theorem
Explore the world of the hypotenuse leg theorem in this mini-lesson. Provides a definition, examples, and practice questions with answers that help with understanding their properties.
CK-12 Foundation
Ck 12: Trigonometry: Pythagorean Identities
[Free Registration/Login may be required to access all resource tools.] Defining trigonometric identities that rely on the Pythagorean Theorem.
Lawrence Hall of Science
The Math Page: Skill in Algebra: The Pythagorean Distance Formula
Here is a site that clearly and thoroughly explains the distance formula, including how it relates to the Pythagorean Theorem. There are example problems solved, problems for the student to attempt, and answers to the student problems....
National Council of Teachers of Mathematics
Nctm: Illuminations: Pythagorean Review
Review and explore the Pythagorean Theorem.