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Locus

The Circle

The Ellipse

The Parabola

The Hyperbola

General Form

Intersections of Lines & Conics

Summary&Test

 

jdsmathnotes

 

UNIT 9 : THE CONICS

LESSON 2: THE CIRCLE

 

Definition: A circle is a locus (set) of points each of which is a constant distance

from a fixed point. The fixed point is the centre of the circle and the fixed distance is the radius.

 

Text Box: Main Ideas:
	The equation of a circle, centre the origin and radius r is:
		         
	The equation of a circle, centre (h, k) and radius r [standard form] is:
		         
	The equation of a circle in general form is;
 

Use completing the square to put in standard form
 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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