Chapitre 14 Angles inscrits. Polygones réguliers

A B M
C
\
AM B
C
AB
[
AOB
\
AM B
\
AM B =1
2
[
AOB
[
AOB = 130
\
AM B = 65

[
AOB = 180
\
AM B =
\
AN B =180
2= 90
AM B M
AN B N
A B
[
AOB = 180
M
\
AM B =180
2= 90
eme
\
AM B =
\
AN B
\
AM B = 50
\
AN B = 50

O
[AB]n
[
AOB =360
n
\
A1OA2=360
3= 120
\
A1OA2=360
5= 72
\
A1OA2=360
6= 60