# Ch 5: Plane Geometry

Refreshing your knowledge of plane geometry ahead of an important exam is simple using our fun and informative chapter. The video and text lessons in this comprehensive study guide are accessible to you 24 hours a day for convenient and flexible study.

## Plane Geometry - Chapter Summary

This engaging chapter covers plane geometry and its related subjects, including the notation and symbols used in plane geometry. Our professionally designed lessons explain the different types of triangles and their properties, as well as the properties of quadrilaterals, parallelograms, polygons and trapezoids. You'll also study the definition of the triangle sum theorem, the exterior angle theorem and triangle congruence postulates. Other topics include the definition of the Pythagorean theorem and its converse. This chapter is designed to help you:

• Explain the formula used for the exterior angle theorem
• Measure and find the sum of the angles of a polygon
• Understand congruence as it applies to geometric shapes
• Identify similar triangles
• Compare perpendicular, parallel and transverse lines
• Differentiate between the area formulas for trapezoids, triangles and parallelograms
• Describe the format for geometric proofs

Feel free to access these learning tools on any mobile device or computer 24 hours a day. It's easy to skip ahead or go back to any section of a video lesson using the video tabs feature. If you prefer to study offline, the printable lesson transcripts highlight key concepts and terms. Our instructors are available to offer their assistance if you need it.

15 Lessons in Chapter 5: Plane Geometry
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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