Nothing. It is always possible to make a duplicate triangle.
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Every triangle is unique, so this question cannot have a serious answer.
It is a rigid 2-dimensional shape.
Three non-collinear points do not determine a unique spherical triangle.
78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.78 42 are, as far as I can make out, two numbers. They do not make a triangle.
From the given dimensions no kind of triangle is possible.