**Irregular Figures** is the fifth of seven self-paced lessons in the “Perimeter, Area, and Volume” section of KET’s *GED ^{®} Geometry Professional Development Online Course*. This lesson focuses on higher-order skills used in other areas of the GED Mathematics Test, including finding an unknown dimension and breaking a complex problem into manageable steps.

NOTE: This course was created based on the 2002 GED^{®} math test. The geometry instruction in this course is still valid, however, for up-to-date information about the 2014 GED^{®} math test, please visit KET’s GED^{®} Test Info: Mathematics online course.

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