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Created by jennykahodi
over 9 years ago
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Question | Answer |
Arrow Theorem: 'the angle subtended from the circumference is half the angle subtended from the centre' | |
Describe this theorem. There are two! | 1. where the radius and tangent meet, the angle is always 90 degrees. (Angles A and C) 2. two tangents drawn from the same point are the same length (point B) |
describe the 'bow tie' theory | angles subtended from the circumference sharing the same arc are equal (or) angles in the same segment are equal |
in an exam, what would you say to describe the cyclical quadrilateral theory. | opposite angles in a cyclical quadrilateral are supplementary (they add to 180 e.g. a+c=180 and b+d=180) |
describe the circle | the angle subtended on the diameter of a circle is always a right-angle (E=90 degrees). the line from the centre that meets the centre of the chord always meets at 90 degrees (angle M) |
what would you say in an exam about the alternate segment theory | Alternate segment theory (angle at the tangent line is the same at the angle opposite) |
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