Here is a question(see attachment) a friend of mine preparing for SAT sent me.

What does the triangle signify?I cant make head or tail of the question. Havent encountered this type of problem. And how to solve it?

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- December 3rd 2008, 05:00 AMfardeen_gentriangle question
Here is a question(see attachment) a friend of mine preparing for SAT sent me.

What does the triangle signify?I cant make head or tail of the question. Havent encountered this type of problem. And how to solve it? - December 3rd 2008, 05:25 AMfardeen_gen
What about the 'a', '2a', 0 etc marked inside the triangles? Are they angles(I doubt it though)?And why all the triangles are equated to zero?Do the triangles represent a particular number(something like determinants)?

- December 4th 2008, 06:01 AMChop Suey
Part of the question seems to be missing (the definition).

- December 4th 2008, 06:04 AMfardeen_gen
Thanks for the assurance!I was perplexed.