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Byju's Answer
Standard IX
Mathematics
The Mid-Point Theorem
In Δ PQR an...
Question
In
Δ
P
Q
R
and
Δ
S
Q
R
,
¯
¯¯¯¯¯¯
¯
P
Q
=
¯
¯¯¯¯¯¯
¯
S
R
and
∠
P
Q
R
=
∠
Q
R
S
then:
A
Δ
P
Q
R
∼
Δ
S
R
Q
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B
Δ
P
Q
R
≡
Δ
S
R
Q
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C
Δ
P
Q
R
=
Δ
S
R
Q
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D
None of these
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Solution
The correct option is
D
Δ
P
Q
R
∼
Δ
S
R
Q
In
Δ
P
Q
R
and
Δ
S
Q
R
,
¯
¯¯¯¯¯¯
¯
P
Q
=
¯
¯¯¯¯¯¯
¯
S
R
and
∠
P
Q
R
=
∠
Q
R
S
So by,
P
Q
=
R
S
=>
∠
P
Q
R
=
∠
Q
R
S
=>
Q
R
=
Q
R
[common]
Δ
P
Q
R
∼
Δ
S
R
Q
Suggest Corrections
0
Similar questions
Q.
In the given
Δ
P
Q
R
,
∠
Q
=
90
o
.
S
is a point on
P
Q
such that
∠
S
R
Q
=
35
o
18
o
and
∠
P
R
S
=
3
o
30
o
. If
Q
R
−
200
m
, find the length of
P
S
.
Q.
If
Δ
P
Q
R
≅
Δ
E
F
D
then
(a) Which side of ΔPQR equals ED?
(b) Which angle of ΔPQR equals angle E?
Q.
(a) Construct
Δ
P
Q
R
, given
¯
¯¯¯¯¯¯
¯
P
Q
=
3.5
c
m
,
¯
¯¯¯¯¯¯
¯
P
R
=
4.5
c
m
, and
¯
¯¯¯¯¯¯¯
¯
Q
R
=
5.5
c
m
(b) Construct ΔPQR, when PQ = 4 cm, QR = 6 cm and ∠PQR = 60
∘
. [4 MARKS]
Q.
For two triangles PQR and XYZ,
P
Q
Q
R
=
Y
Z
Z
X
and
Q
R
P
R
=
Z
X
Y
X
.
Q.
Question 4
If in two and
Δ
A
B
C
a
n
d
Δ
P
Q
R
,
A
B
Q
R
=
B
C
P
R
=
C
A
P
Q
, then
(A)
Δ
P
Q
R
∼
Δ
C
A
B
(B)
Δ
P
Q
R
∼
Δ
A
B
C
(C)
Δ
C
B
A
∼
Δ
P
Q
R
(D)
Δ
B
C
A
∼
Δ
P
Q
R
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