Created by StemPy LabSquare, rectangle, rhombus that is not a square, parallelogram that is not a rectangle, isosceles trapezium, and a kite with no right angle. How many of these six can have all their corners on a circle?
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← A trapezium has all four corners on a circle. The two angles at the ends of one leg are (2x + 9)° and (8x + 11)°. What is the larger of the two angles at the ends of the other leg?In the proof that a quadrilateral with ∠ B + ∠ D = 180° is cyclic, D is supposed to lie inside the circle through A, B, C. AD is extended to meet the circle at D'. Which fact leads to the contradiction? →
More onGeometry › Circles
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