Paper 2 · Co-ordinate Geometry of the Circle
⏱ Tested in 3 exam questions since 2019
Lesson 3 of 9
The Circle 3 – Proving a point is: on a circle, inside a circle or outside a circle
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- Prove a point lies on a circle by substituting its coordinates into the equation
- Prove inside/outside by comparing the point's distance from the centre to the radius
- Normalise equations like 2x² + 2y² + … by dividing by 2 before finding centre and radius
- Compare surds directly (√17 < √20) without decimalising
Most recent exam questions
- 2025 P2 Q7(c)(ii)
- 2024 P2 Q9(a)(ii)
- 2024 P2 Q9(a)(iii)
- 2019 P2 Q3(a)
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