Tuesday, March 06, 2007

Geometry (Class 55)

Overview
Today we wrap-up our work on Chapter 8: Lesson 4 where we examine a different method for setting up proportions involving similar triangles formed when a line intersects the sides of a triangle and is parallel to the third side. As time permits we also begin our work with proving triangles similar.
Textbook Sections
§8.4 (Txt. p.480) Similar Triangles
§8.5 (Txt. p.488) Proving Triangles SImilar

Key Attitudes
Mathematics is about justification.

Key Ideas
If a line intersects the sides of a triangle, and the line is parallel to the third side, then the line divides the other lines into proportional

Key Skills
Using a scale factor to enlarge or reduce a triangle
Writing proportions when given two similar triangles
Calculating a scale factor when given two similar triangles
Measurement
Working with equivalent fractions

Handouts
No Handouts Posted

Assignment
Finish Chapter 8 Lesson 4 (Due next class)
§8.4 (Txt. p.485) #40, 41, 45, 46
Quiz Corrections
Weekly Summary

Posted by Mr. Holcomb on 03/06 at 10:05 AM
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