Objective: I will use known dimensions, areas and perimeters to find missing values for triangles and quadrilaterals.
Language: I will explain the derivation of the formula for a rhombus.
Journal: What are the first few steps of solving area and perimeter problems before you use your calculator?
Homework due today: Notes 9-1 Developing Formulas for Triangles and Quadrilaterals<- click and print if you didn't get a copy in class. If printing from website, you may want to download the file to get the best print version. Use the videos below to complete the notes.
In class practice: Warm Up, 9-1 Practice A, Reggie's Remodel, Answers to Classwork
Textbook Resources: Chapter 9-1
Homework for next time: Notes 9-2 Developing Formulas for Regular Polygons and Circles
You Tube Videos below. Scroll further down for higher resolution screencast videos.