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Byju's Answer
Standard VII
Mathematics
Equal Angles Subtend Equal Sides
State true or...
Question
State true or false:
The following figure shows a trapezium
A
B
C
D
in which
A
B
is parallel to
D
C
and
A
D
=
B
C
, then
∠
D
A
B
=
∠
C
B
A
A
True
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B
False
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Solution
The correct option is
A
True
Construction to be made: Drop
⊥
from D to AB & from C to AB.
So
∠
D
M
A
=
∠
C
N
B
=
90
o
Since DC
∥
AB( given ) so DM=CN.
In
△
ADM &
△
BCN,\
AD=BC ( given )
DM=CN ( By construction )
∠
D
M
A
=
∠
C
N
B
=
90
o
( By construction )
So
△
ADM
≅
△
BCN ( By RHS rule of congruency )
∴
∠
D
A
M
=
∠
C
B
N
o
r
∠
D
A
B
=
∠
C
B
A
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Similar questions
Q.
The given figure shows a trapezium
A
B
C
D
in which
A
B
is parallel to
D
C
and
A
D
=
B
C
.
∠
D
A
B
=
x
∠
C
B
A
.Find
x
Q.
State true or false:
In a trapezium
A
B
C
D
in which
A
B
is parallel to
D
C
and
A
D
=
B
C
, then
∠
A
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C
=
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D
Q.
The following figure shows a trapezium
A
B
C
D
in which
A
B
is parallel to
D
C
and
A
D
=
B
C
.
Prove that :
i
)
∠
D
A
B
=
∠
C
B
A
i
i
)
∠
A
D
C
=
∠
B
C
D
i
i
i
)
A
C
=
B
D
i
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O
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B
and
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=
O
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Q.
State true or false:
The following figure shows a trapezium
A
B
C
D
in which
A
B
∥
D
C
.
P
is the mid-point of
A
D
and
P
R
∥
A
B
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Hence,
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R
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Q.
In the given figure,
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B
C
D
is a trapezium where
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|
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D
=
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