8.1. Use circle equations
- Syllabus
- 0606–2028–2029
- Objective
- 8.1
- Level
- —
8.1. Use circle equations
- Know and use the equation of a circle with radius r and centre (a, b).
- Identify the centre and radius from circle equations in any form, including (x - a)^2 + (y - b)^2 = r^2 and x^2 + y^2 + 2gx + 2fy + c = 0.
- The formula is given in the List of formulas.
ConceptIGCSE Additional Math