Scaling Ratios and Proportions

The video tutorial covers practice problems related to scaled copies of polygons, focusing on identifying true statements about side lengths, angle measurements, and scale factors. It explains the correspondence between quadrilateral points and how to calculate scale factors. Additionally, the video explores ratios in paint mixing, demonstrating how to find equivalent ratios.

Which of the following statements is true about the side lengths of a scaled copy of a polygon?

• They are always whole numbers.

• They are always equal to the original polygon.

• They are always larger than the original polygon.

• They are proportional to the original polygon.

What happens to the angles of a polygon when it is scaled?

• They double in size.

• They remain the same.

• They become obtuse angles.

• They become acute angles.

If a scale factor is applied to a polygon, what changes occur to its side lengths?

• They are divided by the scale factor.

• They are added to the scale factor.

• They are multiplied by the scale factor.

• They remain unchanged.

In a scaled copy, if the original polygon has one right angle, how many right angles will the scaled copy have?

• None

• One

• Two

• Four

What is the scale factor if the distance between two points in the original figure is 6 and in the scaled figure is 3?

• 1/2

• 2

• 3

• 1/3

If the distance between two points in the original figure is 1, what is the distance in the scaled figure with a scale factor of 3?

• 4

• 3

• 2

• 1

Which of the following is an equivalent ratio to 6:5?

• 5:6

• 10:12

• 12:10

• 6:6

If you triple the ratio 6:5, what is the new ratio?

• 15:18

• 9:7.5

• 12:10

• 18:15

What is the result of halving the ratio 6:5?

• 3:2.5

• 6:2.5

• 3:5

• 5:3

If the ratio of pink to blue paint is 6:5, what is the ratio if you quadruple it?

• 24:20

• 12:10

• 18:15

• 20:24