Chords - Higher The perpendicular close perpendicularIf the angle between two lines is a right angle, the lines are said to be perpendicular. from the centre of a circle to a chord close chordA ...
GCSE Edexcel Circle theorems - Higher - Edexcel Chords - Higher Circles have different angle properties described by different circle theorems. Circle theorems are used in geometric proofs and to ...
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