Calculating Actual Lengths from Scale Drawings Using Ratios and Proportions

This video tutorial teaches how to calculate actual lengths from scale drawings using ratios and proportions. It explains the concepts of ratios and proportions with examples, including common mistakes. The tutorial covers solving proportions by equating ratios and using cross multiplication, demonstrating these methods with similar triangles and parallelograms. The video concludes with an application of these concepts to create a scale model of the Parthenon, emphasizing the use of cross multiplication for accurate calculations.

Describe the process of finding the length of a side in similar triangles using ratios.

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What are the extremes and means in a proportion?

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How do you calculate the dimensions of a scale model based on actual measurements?

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