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- GCE N(A)-Level Maths
- Scale Factors and Similarity
Enlargements and reductions with scale factors
- Intro Lesson4:24
- Lesson: 1a2:06
- Lesson: 1b1:42
- Lesson: 22:12
- Lesson: 3a2:06
- Lesson: 3b0:52
- Lesson: 3c0:44
Enlargements and reductions with scale factors
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.
Related Concepts: Congruence and congruent triangles, Triangles congruent by SSS proofs, Triangles congruent by SAS and HL proofs, Triangles congruent by ASA and AAS proofs
Lessons
- 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 41 .
- 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?
Do better in math today
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