"转向几何图形" can be translated as "steering geometric figures" or, depending on the context, "transitioning to geometric figures" (though the former is more direct and commonly used in technical or mathematical contexts).
If you're referring to a specific operation or transformation in geometry where shapes are being "steered" or altered in some way, "steering geometric figures" would be appropriate. If it's more about a shift in focus or analysis to geometric figures, you might also consider phrases like "shifting to geometric figures" or "moving on to geometric figures," but these are less precise and more context-dependent.
For a technical or mathematical discussion, "steering geometric figures" is likely the most accurate and clear choice.