Edexcel IGCSE Maths 复习笔记 5.4.1 Transformations - Enlargement

Edexcel IGCSE Maths 复习笔记 5.4.1 Transformations - Enlargement

Enlargement – what do I need to know?

  • You need to be able to perform an enlargement (on a coordinate grid) as well as spotting and describing an enlargement when presented with one.
  • The key things with an enlargement are:
    • Scale FactorThe scale factor is how many times every side of the image is bigger than the objectHowever if the scale factor is a fraction the image will be smaller than the object
    • Centre of EnlargementThis tells us where on the page the image is going to go but we have a bit of work to do firstAs with the other transformations in most cases it is easiest to move one vertex of the shape and draw the image from there

     

 

 

Worked Example

7.9.1-Transformations-Enalrgement-Worked-Example-1Enlargement-Q1

Worked Example

7.9.1-Transformations-Enalrgement-Worked-Example-2Enlargement-Q1-working

Worked Example

7.9.1-Transformations-Enalrgement-Worked-Example-3Enlargement-Q1-Final-Answer7.9.1-Transformations-Enalrgement-Worked-Example-4

Worked Example

7.9.1-Transformations-Enalrgement-Worked-Example-5Enlargement-Q2

Worked Example

Enlargement-Q2-Working7.9.1-Transformations-Enalrgement-Worked-Example-6

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