Make sure your notebook cover sheet looks like this. #. BookBrief Description
27
Make sure your notebook cover sheet looks like this. #. Book Brief Description 1. S&S Problem 4.2, ACE 2, 5-8, 27 2. S&S Problem 4.3 PAGE 64 You need: Calculator 4.3 Handout Big Idea: Using Ratios and Similarity
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Make sure your notebook cover sheet looks like this. #. BookBrief Description 1.S&S Problem 4.2, ACE 2, 5-8, 27 2. S&SProblem 4.3. PAGE 64. You need: Calculator 4.3 Handout. Big Idea: Using Ratios and Similarity. These two triangles are similar. 12. 4. 5. 6. 2. x. - PowerPoint PPT Presentation
Transcript of Make sure your notebook cover sheet looks like this. #. BookBrief Description
Make sure your notebook cover sheet looks like this.#. Book Brief Description1. S&S Problem 4.2, ACE 2, 5-8, 272. S&S Problem 4.3
PAGE 64
You need: Calculator 4.3 Handout
Big Idea: Using Ratios and Similarity
4
2
56
These two triangles are similar.
x
12
430
1010
360
1010
These triangles are similar.
These are similar rectangles.
x = 10cm, Scale Factor small to large = 22 x 5cm = 10cm
x = 13.75cm, how?
Scale Factor small to large = 2.5.2.5 x 5.5cm=13.75cm
x = 2.5cm, how?
Scale Factor large to small = .25..25 x 10cm=2.5cm
x = 41.25cm, how?
12.5cm x ___ = 27.5cm27.5cm/12.5cm = 2.2scale factor = 2.218.75cm x 2.2 = xx = 41.25cm
x 1.75
2 3.5
=
2 3.5 x 1.75 = x, x=1
1x1.75=2x1.75=5x1.75=3x1.75=2x1.75=3x1.75=8x1.75=4x1.75=
8 x scale factor = 1414/8 = 1.75, so scale factor = 1.754 1.75 = y, y = 7
4in2 + 30in2 + 6in2 = 40in2
5 x 6 = 30
1 x
4 =
4
2x3 =
6
Scale Factor = 1.7540in2 x 1.75 x 1.75 = 122.5in2
Make sure your notebook cover sheet looks like this.#. Book Brief Description1. S&S Problem 4.2, ACE 2, 5-8, 272. S&S Problem 4.3, ACE 9-11
Page 68
YOU NEED: Calculators
a = 15, b = 240b is 16 times greater than a.
3
7
SF 4
p=
a=
P=
A =
10
6
SF = 1/2P = A =
P =
A =
Which of the shapes are similar?
k
l
pq
s
x
1
a
v
u
r
b4
2.5
12
ub = ____
SF ajv to ubr = ____
j
rb = ____
