Similar Shapes

Which side length corresponds with EF?

• ML

• LM

• OL

• EH

Are the two figures similar?

• yes

• no

Tell whether the two figures are similar. Explain your reasoning.

• Yes, similar because they are the same shape and side lengths are proportional.

• No, not similar because they are the same shape, but side lengths are not proportional.

• Yes, same shape

• No, different sizes

Triangle ABC and XYZ are similar.  Use your knowledge of scale factor to find the length of X.

• 20

• 25

• 100

• 40

What is the scale factor of these similar shapes?

• 10

• 7

• 9

• 11

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

• x = 9

• x = 28

• x = 7

• x = 63

What are corresponding sides?

• Are shapes that have the same shape, but not necessarily the same size.
  

• Compares the sizes of the parts of the scale drawing to the actual sizes on the original object.

• They are sides that are in the same position in different plane figures. 

• They are sides that have different ratios.

Triangle ABC and XYZ are similar, ABC is the copy and XYZ is the original shape.  What is the scale factor or multiplier used to make the the smaller one larger?

• 2

• ½

• ⅖

• 5/2

Find the missing side of the large triangle, then, find the PERIMETER of the large triangle.

• the missing side is 12, the perimeter is 24

• the missing side is 12, the perimeter is 36

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

• x = 9

• x = 28

• x = 7

• x = 63