Scale Factor And Scale Copy

Front

What are corresponding sides?

Back

They are sides that are in the same position on an original image and on a scaled copy of that image.

Front

What happens when you draw a scaled copy with a scale factor of 1?

Back

The copy will be the same size.

Front

Is Figure B a scaled copy of Figure A if all the peaks are half as tall?

Back

No.

Front

What is a scale factor?

Back

The number you multiply the original shape by in order to get the scale copy.

Front

What happens when you draw a scaled copy with a scale factor of 4?

Back

The copy will be larger.

Front

If a shape is scaled down by a factor of 2, what happens to its dimensions?

Back

All dimensions are halved.

Front

What is the relationship between scale factor and area?

Back

If the scale factor is k, the area of the scaled copy is k² times the area of the original.

Front

How do you find the scale factor between two similar shapes?

Back

Divide the length of a side of the scaled shape by the length of the corresponding side of the original shape.

Front

What does it mean for two shapes to be similar?

Back

They have the same shape but may differ in size.

Front

If a triangle has sides of length 3, 4, and 5, what are the lengths of the sides in a scaled copy with a scale factor of 3?

Back

9, 12, and 15.