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Geometric diagram illustrating angles formed by three rays from a vertex, with expressions in terms of x.

Diagram showing three rays originating from a common point, forming angles of (x+1)°, (x-1)°, and (x+3)° with the horizontal axis, with a right angle symbol indicating a 90° reference.

Diagram showing three rays originating from a common point, forming angles of (x+1)°, (x-1)°, and (x+3)° with the horizontal axis, with a right angle symbol indicating a 90° reference.

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