8.1 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 actual dimensions.

Front

What does the scale 1 in = 7 ft mean?

Back

It means that every 1 inch on the drawing represents 7 feet in reality.

Front

How do you find the actual length from a scale drawing?

Back

Multiply the length in the drawing by the scale factor to find the actual length.

Front

If a scale drawing has a scale of 1 cm = 8 km, how do you find the distance between two points on the drawing?

Back

Measure the distance in centimeters on the drawing and multiply by 8 to find the actual distance in kilometers.

Front

What is a scale factor?

Back

A scale factor is the ratio of a length in a scale drawing to the corresponding length in the actual object.

Front

If a drawing shows a length of 3 cm and the actual length is 12 ft, what is the scale factor?

Back

The scale factor is 4, meaning 1 cm in the drawing represents 4 ft in reality.

Front

How do you convert a scale drawing measurement to actual size?

Back

Use the formula: Actual Size = Drawing Size × Scale Factor.

Front

What is the purpose of using scale drawings?

Back

Scale drawings help visualize large objects or areas in a manageable size while preserving proportions.

Front

If two locations are 24 cm apart on a map with a scale of 1 cm = 8 km, what is the actual distance?

Back

The actual distance is 192 km, calculated by multiplying 24 cm by 8 km.

Front

What is the relationship between scale drawings and similar figures?

Back

Scale drawings are similar figures that maintain the same shape but differ in size, with proportional dimensions.