what is the difference between implied texture and actual or real texture

Real texture is defined as when a piece feels the way it looks. If a piece of wood looks rough, and when is touched feels rough, that roughness is its real texture. The implied texture of a piece is when it looks like it should feel one way, but it feels completely different. This can also be called visual or simulated texture. If something looks smooth, but has a rough texture, smoothness is the implied texture.

the answer is d . a measurement   how can artists measure the width of the human face to use drawing for correct proportions

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