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Geometry 6.3 Day 2 Done.notebook
1
November 17, 2015
Nov 167:13 AM
Homework OUT!
Grab a Crayon and Calc :)
Nov 1307:56 PM
Geometric Mean Bell WorkGeometric Mean of 5 and 20.
484 squared is 8 times what?
1.
9.
Geometry 6.3 Day 2 Done.notebook
2
November 17, 2015
Nov 167:15 AM
Announcements
Penny Wars
Canned Food Drive
Short Test Friday over C6
TED Ed Riddle
Nov 133:28 PM
6.3 Day 2 Similar Figures
Similarity means angles are ________
and sides are ______________.
Geometry 6.3 Day 2 Done.notebook
4
November 17, 2015
Nov 103:50 PM
The scale factor can be used to find:
• Missing sides
• Perimeter
Perimeter =
The ratio of the perimeters of similar polygons is equal to the scale factor.
Nov 133:29 PM
10
10
8
8 8
8
What is the perimeter of this hexagon?
If this has a 4:3 ratio to a smaller similar hexagon, what is the perimeter of that hexagon?
Geometry 6.3 Day 2 Done.notebook
5
November 17, 2015
Nov 108:45 PM
Scale Factor
Perimeter Perimeter
=
= =
These two figures are similar.
21 21
12
77
12
?
Nov 1410:17 AM
Scale Factor (similarity ratio) of ABCDE to FGHJK:
Find the value of x.
Find the perimeter of FGHJK.
Scale Factor (similarity ratio) of FGHJK to ABCDE :
ABCDE ~ FGHJK
Find the ratio of ABCDE to the perimeter of FGHJK.
Find the perimeter of ABCDE.
Geometry 6.3 Day 2 Done.notebook
7
November 17, 2015
Nov 177:46 AM
These two figures are similar. Find the value of x.
15 5
21
5 15
21
How do you find the area of the shaded region?
x
Nov 108:56 PM
Altitude
Median
Scale Factors can also help find a corresponding median or altitude.
Geometry 6.3 Day 2 Done.notebook
8
November 17, 2015
Nov 108:58 PM
TPR ~ XPZ
Find the length of PS, the altitude.
6 6
20
8 8
TSR
P
XYZ
x
Nov 108:54 PM
Geometry 6.3 Day 2 Done.notebook
9
November 17, 2015
Nov 133:31 PM
6.3 Worksheet
Homework Help on NEXT SLIDES
Nov 184:49 PM