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Geometry

With an Introduction to Angles, you will learn two units for measuring angles, radians and degrees. You will explore how to write about angles and their measurements with Angle Notation and Labeling. Learning about Common Angle measures will help you identify Right Angles, Acute Angles, and Obtuse Angles. From Identifying a Reflex Angle in Context to Identifying an Obtuse Angle in Context, this course covers 360 degrees of how to examine angles.

- Introduction to Angles
- Vertex
- Angle Notation and Labeling
- Right Angle
- Acute Angles
- Obtuse Angles
- Identifying a Right Angle
- Identifying a Right Angle in Context
- Identifying an Acute Angle
- Identifying an Acute Angle in Context
- Identifying an Obtuse Angle
- Identifying an Obtuse Angle in Context
- Common Angle Measures
- Measurement of Angles in Degrees
- 360 degrees
- 180 degrees
- 270 degrees
- Reflex Angles
- Identifying a Reflex Angle
- Identifying a Reflex Angle in Context
- Positive and Negative Angles
- Measurement of Angles in Radians
- Two Pi Radians
- Pi Radians
- Three Halves Pi Radians
- One Half Pi Radians
- Angles Terms of Measurement

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Pathways are a sequence of tutorials that help you learn a whole subject area, one concept at a time. Choose from multiple teachers and teaching styles.

The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia's online courses for college credit. These courses are eligible to transfer to many different colleges and universities.