Unit 2 Section 1 Scaled Copies and Drawings - Advanced Math

An image of an original shape that is stretched in a way that does not distort the original shape is an explanation of what?

• Scaled Copy

• Scaled Drawing

• Scaled Factor

• Scale

When the sides of a shape are a certain number of times as long as the corresponding sides in the original shape.

• Scaled Copy

• Scaled Drawing

• Scaled Factor

• Scale

A two-dimensional representation of an actual object or place.

• Scaled Copy

• Scaled Drawing

• Scaled Factor

• Scale

Tells us what a length on the scale drawing represents in the actual length of the actual object.

• Scaled Copy

• Scaled Drawing

• Scaled Factor

• Scale

True or False:

A scale can be written without a unit of measurement.

• True

• False

There are two conditions to look for to determine whether a figure is a scaled copy:

1. Are each of the _ sides created using the same __ ?

2. 2. Do each of the corresponding _ have the same _ ?

Word bank:

scale factor, measure, corresponding, angles

separate your answers with a comma

Is polygon PQRS a scaled copy of polygon ABCD?

• Yes

• No

Answer explanation

Look for a scale factor:

2 x 2 = 4 4 / 2 = 2

>

1 x 2 = 2 2 / 1 = 2

then

Check the angles:

The angles polygon PQRS

are the same angles as

polygon ABCD

Polygon PQRS is a scaled

copy of polygon ABCD.

The angles are the same

and the scale factor is 1.5

1 inch to 4 feet means:

• Every 2 inches is 4 feet

• Every 1 inch is 4 feet

• Every 2 inches is 8 feet

• every 1 inch is 8 feet

True or False:

If you are trying to go from the scale to the actual you divide

and if you are going from the actual to the scale you multiply:

• True

• False

True or False:

Scales can be expressed in different ways as long as they are an equivalent ratio compared to the original scale

• True

• False

Answer explanation

example:

3 inches to 7 feet

.

can also be expressed as:

1 inch to 7/3

or

3/7 inches to 1 foot

.

explanation

1 in to 7/3 ft:

3 in to 7 ft

÷3 ÷3

=1 =3/7

.

explanation

3/7 in to 1 ft:

3 in to 7 ft

÷7 ÷7

=3/7 =1

RATIO TABLES!!!!! :))))