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Byju's Answer
Standard VII
Mathematics
Important Properties of Triangles
21. In an equ...
Question
21. In an equilateral triangle ABC, D is a point on side BC such that BD=1 by 3 BC prove that 9AD square =7AB square
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Similar questions
Q.
In an equilateral triangle
A
B
C
,
D
is point on side
B
C
such that
B
D
=
1
3
B
C
. Prove that
9
A
D
2
=
7
A
B
2
Q.
In an equilateral triangle
ABC
, D is a point on side BC such that
B
D
=
1
3
BC. prove that 9AD=7AB.
Q.
Question 15
In an equilateral triangle ABC, D is a point on side BC such that
B
D
=
1
3
B
C
. Prove that
9
A
D
2
=
7
A
B
2
.
Q.
In an equilateral triangle
A
B
C
, the side
B
C
is trisected at
D
i.e.,
B
D
=
1
3
B
C
. Prove that
9
A
D
2
=
7
A
B
2
.
Q.
In an equilateral triangle
A
B
C
, a point
D
is taken on base
B
C
such that
B
D
:
D
C
=
2
:
1
. Prove that
9
A
D
2
=
7
A
B
2
.
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