Upload
kipirinai
View
4.059
Download
2
Embed Size (px)
Citation preview
Unidad Didáctica 2
Proporcionalidad y semejanza.
2
3
ab=c
ab
c1
(Fig. 1)
a1=
cb
a1=
ba
a
4
www.dibujotecnico.com
AB
cD
= =K
c= =K
A1/B
1/D
ab
cd
=
ab
bc
=
(Fig. 2)
b
a b
c
5
www.dibujotecnico.com
A
B C
H
a + b
(Fig. 1)
A
B C
H
a - b
(Fig. 2)
ac
cb
=
a
6
a
=b
a.1=b.b
ab
b1
= ba
a1
= b= a2 b.1=a.a
a
7
LR
.R
L=
B
C
D
E
G
F
+ RR
L
b.h 2
h 2
Lb
h/2
L=
A
C
hh/2
bh/2
B
L
s
8
3 cm300 km
E= = =3 cm
30000000 cm1
10000000
9
ABA´B´
BCB´C´
CDC´D´
DAD´A´
= = =
10
O
O=A=(Fig.2)
(Fig.3)