Introduction to Similar Figures

Similar figures are 2 shapes that have the same angles and proportional dimensions. In this lesson we look at how to find the similarity ratio and using that to determine the lengths of the side a of similar polygons, and how to find the height of a tree from its shadow. (Timestamp below)
0:06 What are similar figures?
0:26 Similarity Ratio/Similitude
1:23 Finding the length of a side
2:55 Finding the height of a tree from its shadow