Scale Drawing Vocabulary

A copy of a figure where every length in the original figure is multiplied by the same number.

• scaled copy

• polygon

• segment

• dimension

Vocabulary:  A proportional drawing of an object.

• similar figures

• scale drawing

• scale

• constant of proportionality

scale drawing

• a drawing that uses a scale to represent an object as smaller or larger than the original object

• proper, suitable

• A measure in one direction.

• a scale diagram of the arrangement of rooms in one story of a building

scale

• a scale tells how the measurements in a scale drawing represent the actual measurements of the object.

• dividing 1 by a number give the reciprocal of that number.

• part of a line with two endpoints

• A copy of a figure where every length in the original figure is multiplied by the same number.

Scale Factor

• the constant value of the ratio of two proportional quantities x and y; usually written y = mx or y= cx, where m and c are the constant of proportionality

• A comparison of two quantities by division.

• A magnified or reduced drawing of an object that is similar to the actual object.

• The ratio that compares a length in a drawing corresponding to the length in another magnified or reduced drawing.

Vocabulary:  A ratio between the measurements of the drawing and of the actual object.

• scale drawing

• constant of proportionality

• scale 

• unit rate

The blueprint(drawing) of this house has a length of 6 inches.  The actual house has a length of 18 feet.  What is the scale used?

• 1 inch: 3 feet

• 1 inch: 6 feet

• 3 inches: 6 feet

• 3 inches: 12 feet

Scale: 1in.=7ft. The actual width of the backyard is 49 ft, how wide is it in the drawing?

• 14 in 

• 7 in

• 42 in

• 56 in

From Denver to Chicago = 3 inches. If the scale is 1 inch = 300 miles, find the actual distance.

• 300 miles

• 1000 miles

• 900 miles

• 600 miles

The length of the car in the drawing is 3 cm. If the scale is 1 cm:4 ft, what is the actual car length?

• 12 feet

• 16 feet 

• 10 feet

• 4 feet