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Byju's Answer
Standard IX
Mathematics
Opposite Angles of a Parallelogram Are Equal
If PQRS is a ...
Question
If PQRS is a parallelogram, then what are the remaining angles?
A
∠
P
=
∠
R
=
80
°
∠
Q
=
∠
S
=
100
°
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B
∠
P
=
∠
R
=
90
°
∠
Q
=
∠
S
=
90
°
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C
∠
P
=
∠
S
=
80
°
∠
Q
=
∠
R
=
100
°
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D
∠
P
=
∠
R
=
80
°
∠
Q
=
90
°
∠
S
=
100
°
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Solution
The correct option is
A
∠
P
=
∠
R
=
80
°
∠
Q
=
∠
S
=
100
°
Given, PQRS is a parallelogram
We know that the opposite angles of a parallelogram are equal.
∴
∠
S
=
∠
Q
=
80
°
a
n
d
∠
P
=
∠
R
Also, the sum of consecutive or adjacent angles of a parallelogram is 180°.
∴
∠
Q
+
∠
R
=
180
°
⇒
80
°
+
∠
R
=
180
°
⇒
∠
R
=
180
°
−
80
°
=
100
°
Suggest Corrections
22
Similar questions
Q.
If PQRS is a parallelogram, then
∠
Q
−
∠
S
is equal to :
Q.
In the figure, PQRS is a parallelogram. If
∠
P
=
75
o
, then
∠
Q
=
Q.
PQRS is a parallelogram and
∠
1
and
∠
2
are two exterior,angles, then
∠
1
=
∠
2
=
∠
3
=
∠
4
Q.
In the fig,
□
P
Q
R
S
and
□
A
B
C
R
are two parallelograms.
If
∠
P
=
110
o
then find the measures of all angles of
□
A
B
C
R
.
Q.
PQRS is a parallelogram and PA, SB, RC, QD, are angle bisectors. If PQ = QD = 6 units, find
∠
P
Q
R
.
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