Goal: The learner will use proportions to find measures of objects.

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Presentation transcript:

Goal: The learner will use proportions to find measures of objects. Lesson 8.4

Scale: the ratio of the drawing to the actual measure. Maps use a scale For example: 1 inch = 150 miles

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Finding Ratios of Area Find the ratio of the area of the drawing to the area of the mural.

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Examples Ratio of Perimeters is What’s the scale ratio? The ratio of the areas is

Assignment P. 419 #3-5, 12, 13, 16, 17, 19, 20, 21, 28, 31, 33