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Byju's Answer
Standard VIII
Mathematics
Angles of a Parallelogram
ABCD is a par...
Question
A
B
C
D
is a parallelogram. If
−
−
→
A
B
=
→
a
,
−
−
→
B
C
=
→
b
, then what is
−
−
→
B
D
equal to?
A
→
a
+
→
b
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B
→
a
−
→
b
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C
−
→
a
−
→
b
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D
−
→
a
+
→
b
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Solution
The correct option is
B
−
→
a
+
→
b
−
−
→
A
B
=
→
a
a
n
d
−
−
→
B
C
=
→
b
⇒
−
−
→
A
D
=
→
b
.... [
∵
A
B
C
D
is a parallelogram]
Now,
−
−
→
B
D
=
−
−
→
B
A
+
−
−
→
A
D
=
−
−
−
→
A
B
+
−
−
→
A
D
=
−
→
a
+
→
b
Option D is correct
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0
Similar questions
Q.
{
(
→
a
×
→
b
)
×
→
a
}
×
→
b
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×
{
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×
(
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×
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}
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Q.
ABCD is parallelogram. If
→
A
B
=
→
a
,
→
B
C
=
→
b
then show that
→
A
B
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b
and
→
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D
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b
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−
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a
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Q.
If
|
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a
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=
|
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b
|
=
|
→
a
+
→
b
|
=
1
,
t
h
e
n
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→
a
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|
is equal to
Q.
If
|
→
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=
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∣
→
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∣
∣
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|
→
c
|
=
5
,
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a
⊥
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b
+
→
c
)
,
→
b
⊥
(
→
c
+
→
a
)
and
→
c
⊥
(
→
a
+
→
b
)
then
√
2
∣
∣
→
a
+
→
b
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→
c
∣
∣
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Q.
If
→
r
×
→
a
=
→
b
×
→
a
;
→
r
×
→
b
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→
a
×
→
b
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→
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≠
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→
b
;
→
a
is not perpendicular to
→
b
, then
→
r
=
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