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Byju's Answer
Standard XII
Mathematics
Contra-Positive
E and F are...
Question
E
and
F
are respectively the mid-point of equal sides
A
B
and
A
C
of
△
A
B
C
Show that
B
F
=
C
E
Open in App
Solution
Given E and F are mid point of equal sides AB and AC of triangle ABC
In
Δ
A
B
F
and
Δ
A
C
E
A
B
=
A
C
(given )
∠
A
=
∠
A
(common angle )
A
F
=
A
E
(halves of equal sides)
∴
Δ
A
B
F
≅
Δ
A
C
E
(SAS rule)
∴
B
F
=
C
F
(CPCT)
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6
Similar questions
Q.
E
and
F
are respectively the mid-points of equal sides
A
B
and
A
C
of
Δ
A
B
C
(see figure) Show that
B
F
=
C
E
Q.
In
△
A
B
C
,
E
and
F
are mid-points of sides
A
B
and
A
C
respectively. If
B
F
and
C
E
intersect each other at point
O
, then the
△
O
B
C
and quadrilateral
A
E
O
F
are equal in area.
Q.
In
A
B
C
,
E
and
F
are mid points of sides
A
B
and
A
C
respectively then prove that
E
F
=
1
2
B
C
Q.
In
Δ
A
B
C
, D, E and F are mid-points of sides AB, BC and AC respectively.
Q.
In a
A
B
C
,
E
and
F
are mid-points of sides
A
B
and
A
C
respectively. If
B
F
and
C
F
intersect each other at point
O
, Find If area(Triangle
Δ
OBC) =area(Q
uadrilateral
□
AEOF).
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