use similar polygons
Download
Skip this Video
Download Presentation
Use Similar Polygons

Loading in 2 Seconds...

play fullscreen
1 / 27

Use Similar Polygons - PowerPoint PPT Presentation


  • 107 Views
  • Uploaded on

Use Similar Polygons. 6.3. Similar Polygons. Similar Polygons: all corresponding angles are congruent and the sides are proportional. When 2 polygons are similar. The symbol used when 2 figures are similar is: ~.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Use Similar Polygons' - ataret


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
similar polygons
Similar Polygons
  • Similar Polygons: all corresponding angles are congruent and the sides are proportional.
when 2 polygons are similar
When 2 polygons are similar

The symbol used when 2 figures are similar is: ~

When you know 2 figures are similar you must name the corresponding angles in the same order.

name the corresponding angles then the ratios of the corresponding sides
Name the corresponding angles, then the ratios of the corresponding sides.

ŸA,ŸD

ŸB,ŸE

ŸC,ŸF

name the corresponding angles then the ratios of the corresponding sides1
Name the corresponding angles, then the ratios of the corresponding sides.

ŸR,ŸW

ŸS,ŸV

ŸT,ŸU

name the corresponding angles then the ratios of the corresponding sides2
Name the corresponding angles, then the ratios of the corresponding sides.

ŸC,ŸM

ŸD,ŸJ

ŸE,ŸK

ŸF,ŸL

name the corresponding angles then the ratios of the corresponding sides3
Name the corresponding angles, then the ratios of the corresponding sides.

ŸP,ŸZ

ŸQ,ŸW

ŸR,ŸX

ŸS,ŸY

scale factor
Scale factor
  • The scale factor is the simplified ratio of corresponding sides of a similar polygon
slide14
Determine whether the polygons are similar…then state a similarity statement, and find the scale factor.

yes

„ABC~„FDE

„ACB~„FED

„BCA~„DEF

„BAC~„DFE

„CAB~„EFD

„CBA~„EDF

determine whether the polygons are similar then state a similarity statement
Determine whether the polygons are similar…then state a similarity statement.

yes

„ABC~„FDE

„ACB~„FED

„BCA~„DEF

„BAC~„DFE

„CAB~„EFD

„CBA~„EDF

page 376
Page 376
  • # 3 - 8
use the scale factor to find the length of a side
Use the scale factor to find the length of a side.

Cross multiply

3(20) = 4x

60 = 4x

15 = x

find x
Find x

6x = 4(12)

6x = 48

x = 8

find x1
Find x

x = 18

find x2
Find x

x = 24

find y
Find y

y= 12

find the scale factor then find the lengths of the sides and the perimeter
Find the scale factor, then find the lengths of the sides, and the perimeter.

P= 45

x

P= 60

y

3x = 4(15)

3y = 4(21)

3x = 60

3y = 84

x = 20

y = 28

find the scale factor then find the lengths of the sides and the perimeter1
Find the scale factor, then find the lengths of the sides, and the perimeter.

x

P= 100

P= 60

y

z

5y = 3(20)

3(25) = 5x

5z = 3(20)

5y = 60

5z = 60

75 = 5x

y = 12

z = 12

15 = x

ad