Solve
Guides
Join / Login
Use app
Login
0
You visited us
0
times! Enjoying our articles?
Unlock Full Access!
Standard VIII
Mathematics
Rhombus
Question
ABCD is a rhombus. If
∠
A
C
B
=
40
o
, then
∠
A
D
B
is
90
o
80
o
60
o
50
o
A
90
o
B
60
o
C
80
o
D
50
o
Open in App
Solution
Verified by Toppr
In given figure ABCD is a rhombus. We know that diagonals of rhombus bisect each other perpendicularly.
Hence,
∠
BOC= 90
∘
∠
OCB = 40
∘
(Given)
AD
∥
BC and BD is the transversal --- (Opposite sides of rhombus are parallel to each other)
∴
∠
ADB =
∠
DBC ---- (Alternate angles)
In
△
OBC,
∠
BOC +
∠
OCB +
∠
OBC = 180
∘
⇒
90
∘
+ 40
∘
+
∠
OBC = 180
∘
⇒
∠
OBC =180
∘
- 130
∘
∴
∠
OBC = 50
∘
But
∠
OBC =
∠
DBC
∴
∠
ADB = 50
∘
---( Alternate angle)
Was this answer helpful?
96
Similar Questions
Q1
Which of the following is the correct match with respect to the given question ?
'ABCD' is a rhombus such that
∠
A
C
B
=
40
o
then
∠
A
D
B
=
____.
70
o
As
∠
A
D
B
=
1
/
2
(
180
o
−
40
o
)
45
o
∠
C
+
∠
D
=
90
o
50
o
∠
B
C
D
=
80
o
⇒
∠
A
D
C
=
100
o
∴
∠
A
D
B
=
(
1
/
2
)
x
100
o
60
0
All sides are equal
View Solution
Q2
ABCD is a rhombus. If
∠
A
C
B
=
40
o
, then
∠
A
D
B
is
View Solution
Q3
ABCD is a rhombus. If
∠
ACB
=
40
o
, then
∠
ADB is __________.
View Solution
Q4
If
A
B
C
D
is a rhombus such that
∠
A
C
B
=
40
o
, then
∠
A
D
B
is
View Solution
Q5
ABCD is a rhombus such that
∠
A
C
B
=
50
o
,
find
∠
A
D
B
.
View Solution