Flashcards
Circle theorems
Cards in this deck (8)
- 1—The perpendicular bisector of any chord passes through the centre.
- 2—The angle in a semicircle is always 90 degrees.
- 3—The radius and a tangent always meet at 90 degrees.
- 4—Angles in the same segment are equal.
- 5—The angle at the centre is twice the angle at the circumference
- 6—Opposite angles of a cyclic quadrilateral add up to 180 degrees.
x + y = 180
a + b = 180
- 7—The lengths of two tangents from a point are equal.
AB = AC
- 8—The angle between a tangent and a chord is equal to the angle in the alternate segment.
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- GCSE Maths (Circle theorems) Flashcards on Circle theorems, created by Jessica Alton on 14/12/2015.
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- Jessica Alton
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