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PK 2017 Q2

PKCurrent spec5 marksGeometry & Angles

2. Which of the following diagrams shows the locus of the midpoint of the wheel when the wheel rolls along the zig-zag curve shown?

Five diagrams labelled A to E, each showing a wheel rolling along a grey zig-zag curve and a different path for its midpoint: A a smooth wave; B a zig-zag with sharp peaks and rounded troughs; C a path with flat tops; D a zig-zag following the curve; E a path with rounded peaks and sharp troughs

Pink Kangaroo 2017, Question 2. © UK Mathematics Trust. Original paper on ukmt.org.uk

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