Saturday, March 27, 2010

Challenging P6 2009 SA2 P2 Rulang Q4

4. A right-angled triangle is folded twice as shown below.

A hole is punched at each corner of the folded triangle. How many holes are there when the triangle is unfolded back to its original size?

3 x 2 = 6

6 x 2 = 12 holes

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