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What Are The 8 Circle Theorems
What Are The 8 Circle Theorems. Tangents from a point to a circle. What are the 8 circle theorems?

Once you have proved a theorem, you don’t need to prove it again if you need to use it to prove another theorem. Opposite angles in a cyclic quadrilateral sum to 180 °. The angle at the centre is twice the angle at the circumference.