Notes
Outline
Chapter 8
2
3
4
6
The means are _____
The extremes are ____
Means:
3 and 4
Extremes:
2 and 6
In a proportion,
the product of the _____
equals the product of the _____
In a proportion,
the product of the means equals
the product of the extremes
What symbol is used for similar?
~
For similar polygons,
corresponding angles are ____ and
corresponding sides are ____
For similar polygons,
corresponding angles are congruent and
corresponding sides are proportional
If
DOG
~
CAT then
D
~
___
and
G
~
____
Slide 11
Always, sometimes or never?
Two congruent polygons are _____ similar
Two congruent polygons
are always similar
Always, sometimes or never?
Two rectangles are
_____ similar
Two rectangles are
sometimes similar
The ratio of the length:width
of a Golden Rectangle
is (approximately)
_____ : _____
Slide 17
If
BAD ~
CAT then
complete the proportion:
a
b
c
y
x
z
Complete the proportion:
3
4
x
Slide 21
Multiply
(x + 3)(x 5)
(x + 3)(x 5)
=
x
2
5x + 3x 15
F
O
I
L
=
x
2
2x - 15
SOLVE BY FACTORING:
x
2
9 = 0
x
2
+ 3x 18 = 0
Slide 25
Slide 26
Slide 27
Slide 28
Slide 29
Slide 30
Slide 31
Find the Geometric Mean of
4 and 8
Slide 33
Complete the proportion:
a
b
Slide 35
Complete the proportion:
a
b
Slide 37
For similar polygons, the ratio of perimeters equals the _________
For similar polygons, the ratio of perimeters equals the scale factor
Slide 40
Slide 41
Notes
