Scaling Effects on Area and Perimeter

The video tutorial covers scaling polygons using a scale factor, comparing the perimeter and area of original and scaled polygons, and understanding the impact of scale factors. It also includes calculating scaled areas of triangles and determining scale factors from area changes. The tutorial concludes with solving equations involving fractions and scale factors mentally.

What happens to the perimeter of a polygon when it is scaled by a factor of 2?

• It remains the same.

• It quadruples.

• It doubles.

• It triples.

If a polygon's area is 16 square units and it is scaled by a factor of 2, what is the new area?

• 16 square units

• 32 square units

• 128 square units

• 64 square units

If a polygon's perimeter is scaled by a factor of 3, what happens to the perimeter?

• It triples.

• It quadruples.

• It remains the same.

• It doubles.

How does the area of a polygon change when the scale factor is squared?

• It remains unchanged.

• It increases by the square of the scale factor.

• It triples.

• It doubles.

A right triangle has an area of 36 units. If scaled by a factor of 3, what is the new area?

• 72 square units

• 108 square units

• 144 square units

• 324 square units

What is the scale factor if the area of polygon P is 72 square units and polygon Q is 4.5 square units?

• 1/16

• 1/3

• 1/2

• 1/4

If a polygon is scaled by a factor of 1/2, what happens to its area?

• It doubles.

• It remains the same.

• It becomes one-fourth.

• It becomes half.

What is the result of 1 divided by 1/5?

• 1

• 0.2

• 1/5

• 5

If x times 1/11 equals 1, what is the value of x?

• 0

• 1/11

• 11

• 1

What number divided by 7 equals 1?

• 0

• 1

• 7

• 49