Well I can't believe nobody has solved the triangle puzzle - I know of at least 3 people who have "tried it" and given up. Apparently every primary school teacher in France can do it, since it appeared in the entrance paper to get into (primary) teacher training in a French University! So have a nother go - all you need to know is the formula for the area of a triangle (1/2 base times height).
posted by Fearnley | 9:47 AM
2 Comments:
Right then.
Each of the three smaller white triangles is twice the area of the shaded central triangle. So the outside triangle is seven times the area of the inside one.
Is that right?
P
Yes!! - the base of the outer triangle is the same as the inner one, and it is twice the height, although it isn't immediately obvious as it is an obtuse triangle.
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