Scale Drawings and Their Properties

The video tutorial covers the concept of scale drawings, focusing on reductions and enlargements. Students learn to compare scale drawings with original images to determine if they are reductions or enlargements. The tutorial includes practical examples, such as Celeste's building diagram and Lucca's mosaic piece, to illustrate how to calculate scale factors and assess proportionality. Additionally, a comparison of rectangular cakes is used to demonstrate the importance of consistent scale factors across dimensions.

What does it mean when a scale drawing is described as a 'reduction'?

• The drawing is made smaller.

• The drawing is rotated.

• The drawing is made larger.

• The drawing remains the same size.

In Celeste's building diagram, what are the coordinates of point B?

• (7, 0)

• (7, 18)

• (13, 18)

• (13, 0)

How do you determine if a drawing is a reduction?

• By checking if the new drawing is larger.

• By rotating the drawing.

• By comparing the coordinates of the vertices.

• By ensuring the new drawing is smaller.

What is the scale factor for the height in Celeste's reduction example?

• 1

• 1/3

• 1/2

• 2/3

In Luca's mosaic example, what is the scale factor for the height?

• 2

• 3

• 1/2

• 1/3

Why is Luca's enlarged mosaic not a scale drawing of the original?

• The scale factor is not consistent across dimensions.

• The colors are different.

• The original mosaic is larger.

• The mosaic is not a triangle.

What must be true for a drawing to be considered a scale drawing?

• It must have the same scale factor for all dimensions.

• It must be larger than the original.

• It must be a different shape.

• It must be the same size as the original.

In the rectangular cakes example, what is the scale factor for the height?

• 3

• 2

• 1/3

• 1/2

Why are the rectangular cakes not scale drawings of each other?

• They have different colors.

• They have different shapes.

• They are the same size.

• The scale factors for height and length are not the same.

What is the scale factor for the length in the rectangular cakes example?

• 1/3

• 1/2

• 3

• 2