There are practice worksheets in many of the units that provide more practice on specific topics. To view a practice worksheet, click on the paper/pencil icon.  The worksheet will appear on top of the unit’s main page.  When finished, select File/Close to close the worksheet.  The main page of the unit will be visible once again. Students and teachers may work together to decide what worksheet(s) or part of a worksheet(s) can be used as a supplementary activity for the unit.  The answer key for each worksheet is provided for the instructor’s use. 

In this course, a recurring review of previous topics learned is provided throughout the units. Links to these review topics are listed under “Content Explanations for Review Problems”.  The appropriate review content links will be included in this unit and all of the remaining units of the course.

Required Materials for Math 180
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SIMILAR SHAPES

This unit is about similar triangles and other polygons, and the applications of proportional reasoning.  The knowledge of similar shapes is very useful when solving problems that involve indirect measurement.  In many of the problems, setting up a proportion and using cross multiplication will be very helpful. Sketch drawings for the problems on paper as accurately as possible, and be certain to label the figures appropriately. 

 

Similar Figures: Scaled Down (05:53)
	Practice Worksheet: Similar Triangles
	Answer Key (Password Protected)
	Practice Worksheet: Similar Triangles (Word Problems)
	Answer Key (Password Protected)
Similarity of Polygons and Solids (02:13)
Content Explanations for Review Problems
Ratios and Percents
Squares and Square Roots
Estimation and Scientific Notation
The Real Number System and Order of Operations
Solving Two-Step Equations
Solve and Graph Inequalities
Customary and Metric Units
Polygons
Perimeter, Circumference, and Area
Volume
Surface Area and Volume
Derive Formulas