Scale Drawings

Front

What is a scale drawing?

Back

A scale drawing is a representation of an object or area that is proportionally reduced or enlarged to fit a specific size, maintaining the same ratios as the original.

Front

What does a scale factor of 1/4 mean in a scale drawing?

Back

A scale factor of 1/4 means that every unit of measurement in the drawing represents 4 units in reality.

Front

If 1/4 inch on a map represents 30 miles, how many miles does 1 inch represent?

Back

1 inch represents 120 miles.

Front

What happens to a figure when the scale factor is less than 1?

Back

The figure undergoes a reduction, making it smaller.

Front

What is the scale factor if a figure is enlarged to twice its size?

Back

The scale factor is 2.

Front

How do you calculate the height of a building in a scale drawing if the scale is 1/4 inch = 10 feet?

Back

Divide the actual height by the scale factor. For a 360 feet tall building, it would be 360 feet ÷ 10 feet/inch = 36 inches, which is 9 inches on the scale drawing.

Front

What is the measurement of x if two rectangles are scale drawings and the ratio of their sides is 4:5?

Back

The measurement of x is determined by the ratio; if the corresponding side of the larger rectangle is known, use the ratio to find x.

Front

What does a scale factor of ½ indicate?

Back

A scale factor of ½ indicates a reduction, meaning the new figure is half the size of the original.

Front

In a scale drawing, if the scale is 1 inch = 50 miles, how many inches would represent 200 miles?

Back

4 inches would represent 200 miles (200 miles ÷ 50 miles/inch = 4 inches).

Front

What is the purpose of using scale drawings?

Back

Scale drawings are used to represent large objects or areas in a manageable size while preserving the proportions.