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🔍 PREVIEW MODE – Only you can see this. Back to Admin EduTek Lesson Notes Shop Print PDF Home › SS › Mathematics › Circle Theorem SS 2 Circle Theorem Mathematics SS 2 Third Term Introduction to Circle Theorems A circle theorem is a statement about the properties of circles and the relationships between angles, chords, tangents, and arcs in a circle. 📌 Key Definitions: Radius: A line from the centre to any point on the circumference. Chord: A line segment joining two points on the circumference. [Preview only]