Pythagorean Theorem Teacher Resources

[Free Registration/Login may be required to access all resource tools.] Apply the special properties of 30-60-90 right triangles.

In this activity, students will use vector analysis to understand the concept of dead reckoning. Students will use vectors to plot their course based on a time and speed. They will then correct the positions with vectors representing...

ThatQuiz is an excellent assessment tool for teachers and students. At this site, teachers can create individualized or group assessments on a variety of math topics. Students take these practice assessments directly online and receive...

[Free Registration/Login Required] Students explore the concept of the distance formula by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more about...

[Free Registration/Login Required] Students explore the concept of distance between two points by navigating through the interactive learning module and then answering questions that go along with the module. Students can also learn more...

This video lesson demonstrates how to find the perimeter of triangles. [3:42] The tutorial includes detailed examples. Students can check their understanding with an assessment.

This video lesson describes the characteristics of rectangles and provides examples of how to find area, perimeter, diagonals, and angle measurements. [7:00]

This lesson will demonstrate how to simplify radicals by using prime factorization. It is 4 of 5 in the series titled "Simplifying Radicals with Prime Factorization."

This video lesson demonstrates how to find the slant height of a right cone. Students can check their understanding with an assessment. [6:18]

Special right triangles are investigated in this video tutorial. The lesson provides background knowledge and two videos that show the relationships of the sides in special right triangles and practice problems to test students'...

This video lesson demonstrates two ways for calculating the area of a rhombus. Students can check their understanding with an assessment. [4:55]

This video lesson demonstrates how to solve for the area of a trapezoid. The tutorial includes detailed examples. Students can check their understanding with an assessment.

Special right triangles are explored in this video tutorial. The lesson provides four videos that explain the side ratios for 45-45-90 and 30-60-90 triangles along with real-world examples involving each type of triangle.

This Purplemath lesson explains a simple pictorial way to remember basic reference angle values.

This site from the Northeast Parallel Architectures Center, Syracuse University provides a good five-part basic graphing instructor. Covers all the basics clearly. It is divided into links for easier navigation.

Not only does this site show what the slope-intercept form is, but it helps you find the slope and the intercept of a line. There is also additional information on parallel lines, parametric form, and the distance between two points.

A slide show presentation which shows how component parts can be used to determine a vector. It also introduces trigonometry functions to show how vectors can have rotational directions.

Watch this tutorial to see the process step-by-step of finding the slant height of a cone. [5:17]

In this lesson, you will learn how to create a right triangle on a coordinate plane by using two points that form a diagonal line segment. [4:39]

Here is a site that clearly and thoroughly explains how to solve right triangles for any missing side or angle given any two pieces other sides or angles. There are example problems solved, problems for the student to attempt, and...

Challenges students figure out ten unknown values for right triangles without getting any problems wrong.

This video demonstrates how to find various measures of triangles formed by the medians of a right triangle.

Some friends are at the beach looking out onto the ocean on a clear day and they wonder how far away the horizon is. A second problem asks how far the horizon would be from the top of a mountain. Students must also answer a question...

The purpose of this task is to show that the points on a parabola can be characterized by being equidistant from a point (the focus) and a line (the directrix). Aligns with HSG-GPE.A.2.