1. 11.3 Perimeters and Area of Similar Figures
Similar Polygons

2. Remembering Similar Polygons
Similar polygons have all the Angles congruent and the Sides have the same ratios. (like these three houses)

3. Remember this Theorem
If two polygons are similar (equal angles and corresponding sides in ratios), then the perimeters ratio is the same as the scale factor.
Perimeters are 24:16
same ratio as 3:2 for the sides

4. Theorem
If two polygons are similar (equal angles and corresponding sides in ratios), then the Area ratio is the same as the scale factor squared. (in the regular hexagons)

5. Find the Area and Perimeter
The given figures are similar
How would you find the area?

6. Find the Area and Perimeter
The given figures are similar

7. Find the Area and Perimeter
The given figures are similar

8. Find the Area and Perimeter
The given figures are similar