In /\ A B C ,\ D ,\ E\ a n d\ F are, res...

In `/_\ A B C ,\ D ,\ E\ a n d\ F` are, respectively, the mid-points of `B C ,\ C A\ a n d\ A B` . If the lengths of side `A B ,\ B C\ a n d\ C A` are 7cm, 8cm, and 9cm, respectively, find the perimeter of `/_\ D E F.`

Text Solution

AI Generated Solution

Topper's Solved these Questions

PROBABILITY
RD SHARMA ENGLISH|Exercise All Questions|67 Videos
RATIONALISATION
RD SHARMA ENGLISH|Exercise All Questions|130 Videos

Similar Questions

Explore conceptually related problems

If E ,\ F ,\ G\ a n d\ H are respectively the mid-points of the sides of a parallelogram A B C D ,\ Show that a r(E F G H)=1/2a r\ (A B C D)

In a triangle, P ,\ Q\ a n d\ R are the mid-points of sides B C ,\ C A\ a n d\ A B respectively. If A C=21\ c m ,\ B C=29 c m\ a n d\ A B=30 c m , find the perimeter of the quadrilateral A R P Q

In Figure, D ,E and F are, respectively the mid-points of sides B C ,C A and A B of an equilateral triangle A B C . Prove that D E F is also an equilateral triangle.

A B C D is a parallelogram and E is the mid-point of B C ,\ D E\ a n d\ A B when produced meet at F . Then A F=

In a A B C ,\ E\ a n d\ F are the mid-points of A C\ a n d\ A B respectively. The altitude A P to B C intersects F E\ at Q . Prove that A Q=Q P .

A D\ a n d\ B E are respectively altitudes of A B C such that A E=B D . Prove that A D=B E .

A B C D is a parallelogram, E\ a n d\ F are the mid-points of A B\ a n d\ C D respectively. G H is any line intersecting A D ,\ E F\ a n d\ B C at G ,\ P\ a n d\ H respectively. Prove that G P=P H

In Figure, A B=A CdotB E\ a n d\ C F are respectively the bisectors of /_B and /_C . Prove that E C B \ ~=\ F C B

M ,\ N\ a n d\ P are the mid-points of A B ,\ A C\ a n d\ B C respectively. If M N=3c m ,\ N P=3. 5 c m\ a n d\ M P=2. 5 c m , calculate B C ,\ A B\ a n d\ A C

RD SHARMA ENGLISH-QUADRILATERALS-All Questions

In Figure, A B C D isa trapezium in which side A B is a parallel to si...
Text Solution
|
Prove that the line segment joining the mid-points of the diagonals of...
Text Solution
|
In /\ A B C ,\ D ,\ E\ a n d\ F are, respectively, the mid-points of...
Text Solution
|
In a triangle /a b c ,\ /A=50^0,\ /B=60^0a n d\ /C=70^0 . Find the mea...
Text Solution
|
In a triangle, P ,\ Q\ a n d\ R are the mid-points of sides B C ,\ ...
Text Solution
|
In a A B C median A D is produced to X such that A D=D X . Prove that...
Text Solution
|
In a A B C ,\ E\ a n d\ F are the mid-points of A C\ a n d\ A B respe...
Text Solution
|
In a /\ A B C ,\ B M\ a n d\ C N are perpendiculars from B\ a n d\ C...
Text Solution
|
In triangle A B C is right-angled at B. Given that A B=9cm ,\ A C=15 ...
Text Solution
|
M ,\ N\ a n d\ P are the mid-points of A B ,\ A C\ a n d\ B C respecti...
Text Solution
|
A B C is a triangle and through A ,\ B ,\ C lines are drawn para...
Text Solution
|
In Figure, B E|A C ,\ A D is any line from A\ to\ B C intersecting B E...
Text Solution
|
In figure A B=A C\ a n d\ C P||B A and A P is the bisector of exteri...
Text Solution
|
Let A B C be an isosceles triangle in which A B=A C. If D ,\ E ,\ F ...
Text Solution
|
A B C is a triangle. D is a point on A B such that AD=1/4A B\ a n d\ E...
Text Solution
|
In Figure, A B C D is a parallelogram in which P is the mid-point of...
Text Solution
|
In Figure, A B C D\ a n d\ P Q R C are rectangles and Q is the mid-poi...
Text Solution
|
A B C D is a parallelogram, E\ a n d\ F are the mid-points of A B\ a n...
Text Solution
|
B M\ a n d\ C N are perpendicular to a line passing through the vert...
Text Solution
|
Show that the line segments joining the mid-points of the opposite ...
Text Solution
|