Hong Kong
Stage 4 - Stage 5
Circles (Mixed and Semi-Circles)
Interactive practice questions
How many points lie on the graph of $x^2+y^2=0$x2+y2=0?
Easy
Less than a minute
How many points lie on the graph of $x^2+y^2=-81$x2+y2=−81?
State the equation of the circle.
A circle has its centre at the origin and a radius of $4$4 units.
Sign up to access Practice Questions
Get full access to our content with a Mathspace account