Dilation and Area of Shapes

Dilation

• a transformation that enlarges or reduces a figure

• all types of transformation

• when we "flip" across a line of reflection

Tags

CCSS.8.G.A.3

If two figures are similar, the corresponding sides are ______________.

• equal

• congruent

• proportional

• none of these

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

When you dilate a figure you...

• slide it.

• turn it.

• flip it.

• make it larger or smaller.

Tags

CCSS.8.G.A.3

If the scale factor is less than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

Tags

CCSS.8.G.A.3

If the scale factor is greater than one, the new figure will be

• reduction

• enlargement

• scale

• not proportional

Tags

CCSS.8.G.A.3

Calculate the value of the scale factor between the 2 triangles

• 2.5

• 3

• 3.5

• 4

Tags

CCSS.7.G.A.1

Find the ratio (blue to red) of the area.

• 4/7

• 7/4

• 49/16

• 16/49

What is the value of X?

• X=4

• X=6

• X=3

• X=2

Tags

CCSS.HSG.SRT.A.2

The pair of figures is similar. Find the missing side.

• x = 1

• x = 3

• x = 9

• x = 5

Tags

CCSS.HSG.SRT.A.2

If the scale factor is bigger than one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

Tags

CCSS.8.G.A.3