Proving Area Formulas for Parallelograms, Triangles and Rhombuses

Unit 10: Areas of Plane Figures
Lesson 2 of 8

Objective: SWBAT use composition and decomposition to prove the area formulas for parallelograms, triangles, and rhombuses.

Big Idea: Look deep within...and see a figure whose area formula we've already proven.

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Subject(s):
  75 minutes
triangle formula
 
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