関連ワード:  why is a scale important on a map    why is a scale needed on a map    why is scale important on a map class 6    why is a scale important when reading a map    why is the scale important on a topographic map    why is a scale and important features of a map    why is it important to include a scale on a map    why is it important to have a scale on a map    why is scale important in map making    why is a scale necessary on a map