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Page 1: The angle at the centre Angles in the same The angle in a ...

Theangleatthecentreistwicetheangleatthe

circumference

Anglesinthesamesegement areequal

Theangleinasemicircleis90

degrees

Oppositeanglesinacyclicquadrilateraladdupto180

degrees

Theperpendicular fromthecentre tothechord

bisectsthechord

Theanglebetweenatangent andaradius

is90degrees

Tangentsfromapointoutsideacircleareequalinlength

Alternate segmenttheorem