How many triangles?
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Topics: Starter  Combinations  Problem Solving  Shape
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The important thing is not the answer but the method you used to arrive at the answer. Did you have a structured approach? Were you sure that you had the right answer?
There is a printable worksheet to go with this activity for Transum subscribers.
Can you make up a puzzle like this for others to solve?
How many triangles are on the front of this hotel reception desk?
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Other shape counting starters:
How Many Squares 1?
 How Many Squares 2?
How Many Triangles 1?

How Many Triangles 2?  How Many Triangles 3?
How Many Rectangles?
 Rectangles Investigation 
Icosahedron 
Mystic Rose
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