Scaling

Scaling Week 10

Open your notebook, take notes and answer all questions.

Compare corresponding sides. Base to Base or Height to height

How can you prove if any two shapes are scaled versions of each other? First they have to be the same shape. Second, ...

Don't forget that scale factors will be reciprocals of each other.

Use the formula: Given measurement X scale factor = new Measurement

a scale is a ratio that include units.

Use the formula: Given area X (Scale Factor)² = Scaled Area

Use the formula: Given area X (Scale Factor)² = Scaled Area

Multiple Choice

Would a rectangle that is 4 by 5 be a scaled down version of a rectangle 12 x 20?

• yes

• no

Open Ended

How do you know if two shapes are scaled versions of each other?

Fill in the Blanks

If a rectangle is 5 by 6 and the scale factor is 3, after scaling up, what would be the new measurements?