Scale Drawings

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or a space that is proportionally reduced or enlarged according to a specific scale factor.

Front

What does a scale factor less than one indicate?

Back

A scale factor less than one indicates a reduction in size.

Front

What does a scale factor greater than one indicate?

Back

A scale factor greater than one indicates an enlargement in size.

Front

What is the scale factor from triangle ABC to triangle DEF if triangle DEF is twice as large?

Back

The scale factor is 2/1.

Front

If the scale factor is x4, how many times larger will the area be?

Back

The area will be x16 larger.

Front

Are scaled copies always proportional?

Back

No, scaled copies are not always proportional.

Front

What is the relationship between scale factor and area?

Back

The area of a figure changes by the square of the scale factor.

Front

If a rectangle has a length of 4 cm and a width of 2 cm, what are the dimensions of a scaled drawing with a scale factor of 3?

Back

The dimensions will be 12 cm (length) and 6 cm (width).

Front

What is the formula to find the scale factor?

Back

Scale Factor = (Dimension of the new figure) / (Dimension of the original figure).

Front

If a scale drawing of a map has a scale of 1:100, what does this mean?

Back

This means that 1 unit on the map represents 100 units in reality.