GK 2016 Q3
3. Joanna turns over the card shown about its lower edge and then about its right-hand edge, as indicated in the diagram.
What does she see?
Grey Kangaroo 2016, Question 3. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: B
When the card is turned about its lower edge, the light grey triangle will be at the top and the dark grey triangle will be on the left. When this is turned about its right-hand edge, the light grey triangle will be at the top and the dark grey triangle will be on the right. Therefore Joanna will see option B.
Solution © UK Mathematics Trust, from the GK 2016 solutions.