Enlargements

• The scale factor is the amount the shape grows
  • For example, if you have to enlarge a shape by a scale factor of 4, you enlarge it 4 times as large as the original
  • Shapes also need to increase their distance from the center of enlargement
• To find the center of enlargement from an enlarged shape and a normal shape, draw two lines that go through the same points on the shapes
  • Where they cross is the center of enlargement
• Fractional enlargement is when the shape shrinks in size
• Negative enlargement is when the shape enlarges in the opposite direction
  • This can be combined with fractional enlargement