1. ##### Question 214
Coordinate Geometry - Circles - Geometry - Investigate Equation of Circle: ${\left( {x - a} \right)^2} + {\left( {y - b} \right)^2} = {r^2}$
2. ##### Question 4006
was: Coordinate Geometry - Circles - Geometry - Equation of a circle 2
now: Coordinate Geometry - Circles - Geometry - Matching Circles
3. ##### Question 1684
was: Coordinate Geometry - Tangents and normals - The parabola
now: Coordinate Geometry - Tangents and normals - Investigate Equation of Parabola
4. ##### Question 1686
was: Coordinate Geometry - Tangents and normals - The ellipse
now: Coordinate Geometry - Tangents and normals - Investigate Equation of Ellipse
5. ##### Question 1688
was: Coordinate Geometry - Tangents and normals - The hyperbola
now: Coordinate Geometry - Tangents and normals - Investigate Equation of Hyperbola
6. ##### Question 1690
was: Coordinate Geometry - Tangents and normals - The rectangular hyperbola
now: Coordinate Geometry - Tangents and normals - Investigate Equation of Rectangular Hyperbola
7. ##### Question 1177
was: Coordinate Geometry - Tangents and normals - The circle
now: retired
8. ##### Question 1653
was: Coordinate Geometry - Conics - The circle
now: merge with Question 214
9. ##### Question 1652
was: Coordinate Geometry - Conics - The family of conics
now: Coordinate Geometry - Conics - Family of Conics using Polar Equations
10. ##### Question 1176
was: Coordinate Geometry - Tangents and normals - The parabola
now: Coordinate Geometry - Tangents and normals - The parabola
11. ##### Question 1202
was: Coordinate Geometry - Tangents and normals - The ellipse
now: Coordinate Geometry - Tangents and normals - The ellipse
12. ##### Question 1204
was: Coordinate Geometry - Tangents and normals - The hyperbola
now: Coordinate Geometry - Tangents and normals - The hyperbola
13. ##### Question 1203
was: Coordinate Geometry - Tangents and normals - Other curves
now: Coordinate Geometry - Tangents and normals - Other curves
14. ##### Question 1178
Coordinate Geometry - Tangents and normals - Investigate the Rectangular Hyperbola: $xy = {c^2}$ or $\left( {ct,{c \over t}} \right)$
15. ##### Question 1654
was: Coordinate Geometry - Conics - The parabola
now: Coordinate Geometry - Conics - The parabola
16. ##### Question 1655
was: Coordinate Geometry - Conics - The ellipse
now: Coordinate Geometry - Conics - The ellipse
17. ##### Question 1656
was: Coordinate Geometry - Conics - The hyperbola
now: Coordinate Geometry - Conics - The hyperbola
18. ##### Question 1657
was: Coordinate Geometry - Conics - Rectangular hyperbola
now: Coordinate Geometry - Conics - Rectangular hyperbola
19. ##### Question 1181
was: Coordinate geometry - Parametric curves - Various curves
now: Coordinate geometry - Parametric curves - Various curves
20. ##### Question 1182
was: Coordinate geometry - Parametric curves - Various curves 2
now: Coordinate geometry - Parametric curves - Various curves 2
21. ##### Question 1183
was: Coordinate geometry - Parametric curves - Various curves 3
now: Coordinate geometry - Parametric curves - Various curves 3
22. ##### Question 1184
was: Coordinate geometry - Parametric curves - Various curves 4
now: Coordinate geometry - Parametric curves - Various curves 4
23. ##### Question 1666
was: Coordinate geometry - Parametric curves - The parabola
now: Coordinate geometry - Parametric curves - The parabola
24. ##### Question 1668
was: Coordinate geometry - Parametric curves - The ellipse
now: Coordinate geometry - Parametric curves - The ellipse
25. ##### Question 1669
was: Coordinate geometry - Parametric curves - The hyperbola
now: Coordinate geometry - Parametric curves - The hyperbola
26. ##### Question 1670
was: Coordinate geometry - Parametric curves - The rectangular hyperbola
now: Coordinate geometry - Parametric curves - The rectangular hyperbola
27. ##### Question 1671
was: Coordinate geometry - Parametric curves - Cycloids
now: Coordinate geometry - Parametric curves - Cycloids
28. ##### Question 1672
was: Coordinate geometry - Parametric curves - More cycloids
now: Coordinate geometry - Parametric curves - More cycloids