Drills
Using x² + y² = r² to find radii, test points and build tangent equations at a point.
Author note — to cover (Higher)
- Fluency — the radius from a circle’s equation and the equation from a radius, squares kept exact (4 questions).
- Points — testing whether a point lies on, inside or outside a given circle by substitution (4 questions).
- Tangents — the gradient of the radius to a point, the perpendicular tangent gradient, and the tangent’s equation as a single choice (4 questions).
The test
—coming soon—
Where to go next
This mixed review uses the methods from these learning pages: