1. Graph of the Day y = mx + b Rise = Run = m = b = y =

2. Similar Triangle Word Problems Learning Goals: I can set up a proportional ratios to solve for a side length between two similar triangles to solve a real world problem

3. Similar Triangle Word Problems Learning Goals: I can set up a proportional ratios to solve for a side length between two similar triangles to solve a real world problem

4. Similar Triangles You already know that similar triangles have sides that are proportional. You also know that you can find one side of a similar triangle if you know the corresponding side on a similar triangle. θ θ 6 8 10 x y

5. Shadow Questions If you are asked about 2 shadows – it’s probably a similar triangle question. The shadows of 2 objects form 2 right angle triangles that are similar. 4 m 1 m 1.6 m x

6. Surveyor Questions Surveyors use similar right angle triangles to determine the size of things like ponds and rivers and such. POND 12 m 5 m 14 m x

7. Mirror Problems If you know how high your eye is from the ground, you can determine the height of things using a mirror. Simply place the mirror on the ground a known distance away from the object. Then walk backwards until you can see the top of the object in the mirror and write down how far you are from the mirror. x 1.4m 12m 5m

8. Now for some practice: Get the textbooks do pg. 33 # 4-12 For a fun extra challenge, do 14-16 on pg 37 as well Textbook Questions