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Byju's Answer
Standard IX
Mathematics
Triangles between Same Parallels
D is any poin...
Question
D is any point on AC in
A
B
C
.
Now,
P
,
Q
,
X
,
Y
are the mid points of AB, BC, AD and DC respectively. Show that PX = QY.
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Solution
In
△
A
B
C
,
P
and
Q
are mid points of
A
B
and
B
C
respectively.
So,
P
Q
|
|
A
C
and
P
Q
=
1
2
A
C
..................(1) (Mid point theorem)
Similarly,
X
and
Y
are mid points of sides
C
D
and
A
D
respectively.
we get
P
Q
|
|
X
Y
and
P
Q
=
X
Y
Hence,
P
Q
X
Y
is a parallelogram .... (pair of opposite sides is parallel and equal)
Now,
X
Y
|
|
A
C
and
Q
Y
|
|
B
D
And diagonals in
P
Q
X
Y
are equal
Then
P
X
=
Q
Y
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