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12 cards from this deck
Bonus facts that naturally follow from theorems
All equal/same size
Same arc
Centre is twice the edge angle
90°90°90° (right angle)
90°90°90°
Diameter
90°90°90° splits circle in half
4-sided shape with all corners on circle edge
180°180°180°
Cyclic quadrilateral
Shortcuts to find answers quickly from known theorems
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