I notice many students had a hard time making sense of the standard equation of circle which is nothing new! The standard equation of circle is simply the Distance formula learnt in Coordinate Geometry in E-Math and A-Math.
Diagram for Standard Eqn of Circle
Standard equation of circle:
Example:
Test Yourself:
To ensure you have understood the standard equation of circle, attempt the question below by selecting the correct option and leave your answer in the comments section.
In my future post, I’m going to discuss the other type of equation of circle: General equation of circle.
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Hi,
I'm Ai Ling. I enjoy coaching students who have challenges with
understanding and scoring in 'O' Level A-Maths and E-Maths. 
