Circle Theorems
10 lessons, in the order they are taught. Part of the Year 11 Maths curriculum.
What this topic covers
- 1Checking and securing understanding of the parts of a circle
- 2Identifying which circle theorem to use
- 3Problem solving with circle theorems
- 4The alternate segment theorem
- 5The angle at the centre of the circle is twice the angle at any point on the circumference
- 6The angle in a semicircle is a right angle
- 7The angles in the same segment are equal
- 8The opposite angles of a cyclic quadrilateral sum to 180°
- 9The perpendicular from the centre of a circle to a chord bisects the chord
- 10The tangent at any point on a circle is perpendicular to the radius at that point