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In the Graphics window, click on the rectangle to select it, then in the Details window, click Geometry > Apply.
This will apply "Mapped Face Meshing" to the rectangle which will yield a regular mesh.
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In the Graphics window, click on the rectangle to select it, then in the Details window, click Geometry > Apply.
This will apply "Mapped Face Meshing" to the rectangle which will yield a regular mesh.
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