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- Scale Factors and Similarity

Still Confused?

Try reviewing these fundamentals first

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Try reviewing these fundamentals first

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Get Started Now- Intro Lesson4:24
- Lesson: 1a2:06
- Lesson: 1b1:42
- Lesson: 22:12
- Lesson: 3a2:06
- Lesson: 3b0:52
- Lesson: 3c0:44

When you are asked to make an object bigger or smaller, you will ask, "by how much?" In this case, scale factor can help answer the question. In this lesson, we will practice how to enlarge and reduce objects according to the scale factors given to us.

Basic Concepts:Congruence and congruent triangles, Triangles congruent by SSS proofs, Triangles congruent by SAS and HL proofs, Triangles congruent by ASA and AAS proofs,

- Introductiona)What is a scale factor?
- 1.Redraw the letters below using a scale factor of 2.a)

b)

- 2.Redraw the shape using a scale factor of $\frac{1}{4}$ .

- 3.The ratio of the length to the width of a window is 3:2. If the window is 8 m wide, what are the dimensions of the window that has a scale factor of:

a)0.5?b)2?c)3?

10.

Scale Factors and Similarity

10.1

Enlargements and reductions with scale factors

10.2

Scale diagrams

10.3

Similar triangles

10.4

Similar polygons

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