Course: Algebra III / Intermediate Algebra
Topic: Nonlinear Equations and Applications
Subtopic: Applications - Geometry & Pythagorean Theorem
Overview
Quadratic functions can be used to model a variety of real-life applications including geometry problems involving area and right-triangle problems involving the Pythagorean Theorem. Once the problem is translated into a quadratic equation, the methods we are studying for solving quadratics are used to find the solutions.
Objectives
By the end of this topic you should know and be prepared to be tested on:
- 11.5.1 Understand that quadratic functions can be used to model a variety of real-life applications
- 11.5.2 Solve geometry application problems involving area and/or perimeter using a quadratic equation
- 11.5.3 Solve geometry application problems involving right triangles and the Pythagorean Theorem using a quadratic equation
Terminology
Define: perimeter, area, Pythagorean Theorem
Text Notes
Text:
Intro & Inter Algebra for CS 3ed by Blitzer, sect. 11.1 (cont'd)
- This section of the text has too much material. These comments on coverage are a continuation of a previous lesson notes.
- Several geometry-related applications are included. Focus on the Pythagorean Theorem problems starting on page 744.
- pg 745-747 SKIP all the "distance formula" and "midpoint formula" problems. This material is covered in a precalculus course.
Supplementary Resources
Information on Pythagoras and the Pythagorean Theorem:
Biography of Pythagoras of Samos
Proof of the Pythagorean Theorem
History of the Pythagorean Theorem