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If D,E,F are the mid-point of sides AB,B...

If D,E,F are the mid-point of sides AB,BC and CA respectively of `triangle`then the ratio of the areas of triangles `triangleDEF` and ABC is

A

`1:2`

B

`2:3`

C

`1:4`

D

`4:5`

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R G PUBLICATION-TRIANGLES-EXERCISE
  1. In Fig.6.62, two chords AB and CD of a circle intersect each other at ...

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  2. State basic proportionality theorem.

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  3. In the adjoining figure, DE||BC and AD=1 cm,BD=2 cm.What is the ratio...

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  4. The areas of two similar triangles are 169cm^2 and 121cm^2respectively...

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  5. If triangle ABC and triangleDEFare similar triangle such thatangleA=57...

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  6. If the altitude of two similar triangle are in the ratio 2:3 what is t...

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  7. State Pythagoras theorem.

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  8. The lengths of the diagonals of a rhombus are 30cm and 40cm.Find the s...

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  9. In an isosceles triangleABCif AC=BC and AB^2=2AC^2 then what is the me...

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  10. What is the height of an equilateral triangle having each side 12 cm?

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  11. Sides of two similar triangle are in the ratio 4:9.Areas of these tria...

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  12. triangleABC~triangleDEFsuch that ar(triangleABC) =36cm^2and(triangleDE...

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  13. triangleABC and triangleDEFare two equilateral triangle such that D is...

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  14. Two isosceles triangles have their corresponding angles equal and thei...

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  15. If D,E,F are the mid-point of sides AB,BC and CA respectively of trian...

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  16. In a triangleABC,angleA=90^@,AB=5cm and AC=12cm.If AD|BCthen the value...

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  17. In an equilateral triangle ABC if AD|BC thenAD^2= a)CD^2 b)2CD^2 c)3C...

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  18. If in triangleABC and triangleDEF,(AB)/(DE)=(BC)/(FD) then triangleABC...

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  19. In an isoscelestriangleABC,angleC=90^@.If AC=6cm then the value of AB ...

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  20. If in triangleABC and trianglePQR we have(AB)/(QR)=(BC)/(PR)=(CA)/(PQ)...

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