1. Things Needed Today (TNT)
Math CC7/8 – Oct. 20
Things Needed Today (TNT)
Pencil/Math Notebook
Math Book –pg. 56 (if you want to following in the book)
Labsheets A-B…located on table
Math Notebook
Topic: Scale Factor & Similar Shapes

2. What’s Happening?
S&S 3.3
Learning Check

3. Scaling Perimeter & Area
Polygons fit together to cover, or tile, a flat surface. For example, the surface of a honeycomb has a pattern of regular hexagons. Many bathroom and kitchen floors are covered with a pattern of squares tiles.
These patterns of polygons that fit together are called tessellations.

4. Hmmmmmmm.

5. Labsheet A-B

7. Just sketch the triangle because it will not fit on the graph
Just sketch the triangle because it will not fit on the graph. Write the new base and height inside of the triangle.

9. 4 cm Scale Factor from EFGH to ABCD is 4/9 or 0.444
Scale Factor from ABCD to EFGH is 9/4 or 2.25
Or… find the relationship between the long and short side , then apply that to the smaller figure
4 cm
Side AD corresponds to side EH.
Find the scale factor, then take the corresponding side and divide it by the scale factor to find the missing side.

10. Scale Factor is 1.25
Do not FORGET the sum of the interior angles of a triangle is 180°..(Shapes & Design Unit  )
6.25 cm
3.75 cm
= 3.75
= 6.25