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Sections

Circles

Pick a section. You read the idea first, then answer questions on it.

1. A line that touches1 ideaRead
2. Before you start1 ideaRead
3. Tangent, secant and point of contact1 ideaRead
4. A tangent is a secant’s limit1 ideaRead
5. How many tangents from a point1 ideaRead
6. The length of a tangent from a point1 ideaRead
7. RHS: a shortcut for right triangles1 ideaRead
8. Tangent is perpendicular to the radius1 ideaRead
9. The two tangent lengths are equal1 ideaRead
10. The tangent pair bisects the angle1 ideaRead
11. A tangent is not two very close points1 ideaRead
12. The distance to the centre is the hypotenuse1 ideaRead
13. Tangent length from radius and distance1 ideaRead
14. Finding the angle between two tangents1 ideaRead
15. A chord bisected by a smaller circle1 ideaRead
16. Opposite sides of a circumscribing quadrilateral1 ideaRead
17. A circumscribing parallelogram is a rhombus1 ideaRead
18. Relating the angle at T to the angle at P1 ideaRead
19. Recap1 ideaRead
20. Where you will meet this1 ideaRead
21. Practice set: Exercise 10.11 ideaRead
22. Practice set: Exercise 10.21 ideaRead