7-8 Scale Models and Drawings

Scale is defined as?

__________: A ratio of lengths on the drawing and of the actual object.

• scale drawing

• constant of proportionality

• scale

• unit rate

What is a scale drawing?

• An object or drawing with lengths that are proportional to the object it represents.

• This line segment from the center of a circle to a point on the circle.

• When two lines cross, they form two pairs of vertical angles across from one another.

• An image that has been made bigger and all the angles change size.

Using the map and scale, and given that the distance between Maine and Houlton as 3in, find the actual distance between these towns

Evaluate responses using AI:

OFF

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

• 300 miles
• 1000 miles
• 900 miles
• 600 miles

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

Zayed made a scale model of a local bridge. The model spans 6cm; the actual bridge spans 50m. What is the scale of the model? What scale factor did he use to build the model?

A scale drawing of a house shows 9cm ×10cm. If 6cm=12 ft, what are the actual dimensions?

• 9ft x 10ft
• 1ft x 2ft
• 12ft x 6ft
• 18ft x 20ft

A model of a planned baseball stadium is 2 ft wide. The scale for the model is 1 foot = 100 yards. What is the width of the actual stadium?

• 20 yards
• 2 yards
• 200 yards
• 2000 yards

Alexis is building a 2 ft. tall model of the Gateway Arch in St. Louis, Missouri.  The scale is 3 in : 78.75 ft.  Which is the closest to the height of the actual arch?

• 630 ft
• 600 ft
• 400 ft
• 200 ft