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Chisinau City MO
1977 Chisinau City MO
138
Chisinau MO p138 1977 VIII isosceles, <A=40^o , BC:AD=\sqrt3
Chisinau MO p138 1977 VIII isosceles, <A=40^o , BC:AD=\sqrt3
Source:
March 17, 2021
geometry
isosceles
angles
Problem Statement
In an isosceles triangle
B
A
C
BAC
B
A
C
(
∣
A
C
∣
=
∣
A
B
∣
| AC | = | AB |
∣
A
C
∣
=
∣
A
B
∣
) , point
D
D
D
is marked on the side
A
C
AC
A
C
. Determine the angles of the triangle
B
D
C
BDC
B
D
C
if
∠
A
=
4
0
o
\angle A = 40^o
∠
A
=
4
0
o
and
∣
B
C
∣
:
∣
A
D
∣
=
3
|BC|: |AD|= \sqrt3
∣
BC
∣
:
∣
A
D
∣
=
3
.
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