This is the first video in a series that will cover all high school Geometry circle topics (links to all videos below). In this video we will discover how to write the equation of a circle on the coordinate plane. I will take you through several examples of how you may be asked to work with the equation of a circle, including completing the square.

Equation of a Circle:    • The equation of a circle  
Inscribed and Central Angles:    • Angles in Circles Pt. 1 - Inscribed a...  
Angles formed by Intersecting Chords:    • Angles in Circles Pt. 2 - Intersectin...  
Angles formed by Secants and Tangents:    • Angles in Circles Pt. 3 - Secants and...  
Intersecting and Perpendicular Chords and Segment Length:    • Intersecting and Perpendicular Chords...  

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