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Byju's Answer
Standard IX
Mathematics
Triangles between Same Parallels
In the given ...
Question
In the given figure, diagonals PR and QS of the parallelogram PQRS intersect at point O and LM is parallel to PS.
Show that :
Area (
Δ
POS) = Area (
Δ
QOR) =
1
2
Area (|| gm PQRS)
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Solution
In given figure parallelogram PQRS, PR and QS diagonal intersect at o
We know that the diagonal intersect
each other
at the right angle
The line LM is parallel to PS
Then diagonals of
a
parallelogram divide into equal
area of triangles
Then area of
Δ
POQ=
area of
Δ
POS=
area of
Δ
QOR=
area of
Δ
SOR
OR Area of
Δ
POS +area
Δ
QOR=
1
2
= area of parallelogram
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Similar questions
Q.
State true or false:
In the given figure, diagonals
P
R
and
Q
S
of the parallelogram
P
Q
R
S
intersect at point
O
and
L
M
is parallel to
P
S
, that
2
Area
(
Δ
P
O
S
)
=
Area
(
/
/
g
m
P
M
L
S
)
Q.
State true or false:
In the given figure, diagonals
P
R
and
Q
S
of the parallelogram
P
Q
R
S
intersect at point
O
and
L
M
is parallel to
P
S
, that
Area
(
Δ
P
O
S
)
+
Area
(
Δ
Q
O
R
)
=
Area
(
Δ
P
O
Q
)
+
Area
(
Δ
S
O
R
)
Q.
In quadrilateral PQRS diagonal PR and QS intersects at O such that
A
r
e
a
(
Δ
P
O
S
)
=
A
r
e
a
(
Δ
Q
O
R
)
.If the distance between side PQ and SR is 4 cm, PQ=3cm, SR=7 cm. Find ar (PQRS).
Q.
PR is diagonal of a parallelogram PQRS. Show that
Δ
PQR
≅
Δ
RSP.
Q.
The diagonals PR and QS of a cyclic quadrilateral PQRS intersect at X. The tangent at P is parallel to QS. Prove that
P
Q
=
P
S
.
If m
∠
P
Q
S
=
50
o
, then m(
∠
P
R
S
) is
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