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+ Equation of a Circle. + Circle A Circle is a set of all points in a plane equidistant from a given point. The Center.

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Presentation on theme: "+ Equation of a Circle. + Circle A Circle is a set of all points in a plane equidistant from a given point. The Center."— Presentation transcript:

1 + Equation of a Circle

2 + Circle A Circle is a set of all points in a plane equidistant from a given point. The Center.

3 + Circle Equation Centered at the Origin: Centered at (h,k): (x,y) is any point on the circle (h,k) is the center point r is the radius

4 + Identifying the Center and Radius Find the Center and the Radius

5 + Identifying the Center and Radius Find the Center and the Radius

6 + Writing an equation of a Circle Given the center and the radius, write an equation of a circle. Center (-4,3) and radius 4

7 + Try Some! Given the center and the radius, write an equation of a circle.

8 + Try Some! Given the center and the radius, write an equation of a circle.

9 + Writing an Equation From a Graph

10 + Graphing Circles Graph the following circle.

11 + Completing the Square Use Completing the Square find the center and the radius!

12 + Completing the Square Use Completing the Square find the center and the radius!

13 + Completing the Square Use Completing the Square find the center and the radius then find Circumference and Area. x 2 + 2x + y 2 + 14y – 31 = 0

14 + Completing the Square Use Completing the Square find the center and the radius then find Circumference and Area. x 2 - 10x + y 2 + 4y – 7 = 0


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