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<ABD=29^o,<ADB=41^o,<ACB=82^o ,<ACD=58^o (2016 Argentina OMA L3 p4)
<ABD=29^o,<ADB=41^o,<ACB=82^o ,<ACD=58^o (2016 Argentina OMA L3 p4)
Source:
June 19, 2020
angles
geometry
Problem Statement
Find the angles of a convex quadrilateral
A
B
C
D
ABCD
A
BC
D
such that
∠
A
B
D
=
2
9
o
\angle ABD = 29^o
∠
A
B
D
=
2
9
o
,
∠
A
D
B
=
4
1
o
\angle ADB = 41^o
∠
A
D
B
=
4
1
o
,
∠
A
C
B
=
8
2
o
\angle ACB = 82^o
∠
A
CB
=
8
2
o
and
∠
A
C
D
=
5
8
o
\angle ACD = 58^o
∠
A
C
D
=
5
8
o
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