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DeltaABC and DeltaBDE are two equilatera...

`DeltaABC` and `DeltaBDE` are two equilateral triangles. If `D` is the mid-point of `BC`, then the ratio of the areas of `DeltaABC` and `DeltaBDE` is

A

`2:1`

B

`1:2`

C

`1:4`

D

`4:1`

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CALCUTTA BOOK HOUSE-SIMILARITY-Exercise 5.2
  1. In DeltaPQR and DeltaDEF,/Q=/E=42^(@), (PQ)/(DE)=(QR)/(EF) and if /F=6...

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  2. In the right-angled triangles DeltaPQR and DeltaDEF, /Q=/E= right angl...

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  3. DeltaABC and DeltaBDE are two equilateral triangles. If D is the mid-p...

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  4. If the ratio of the sides of two similar triangles be 4:9, then ratio ...

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  5. DeltaPQR~DeltaDEF and their areas are 49 sq-cm and 121 sq-cm respectiv...

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  6. Write the following sentences true or false: Any two identical image a...

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  7. C and B are two points on the straight line XY, P is an external point...

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  8. In DeltaPQR, a straight line parallel to QR intersects PQ and PR at th...

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  9. Fill the blank :All (equilateral/isosceles) triangle are always ident...

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  10. state true or false; Two equiangular triangles are always congruent.

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  11. state true or false; If the two sides of two triangles are in proport...

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  12. If the areas of two similar triangles be equal, they are .

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  13. The ratio of the areas of two similar triangels is equal to the of the...

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  14. Prove that the perimeters of two similar triangles are proportional to...

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  15. AD is a perpendiuclar drawn from the vertex A of the right-angled tria...

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  16. Fill the blank :All circles are(uniform/identical)

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  17. Fill the blank :All square are(uniform/identical)

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  18. Write the following sentences true or false: Any two identical figure ...

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  19. The diagonals of the quadrilateral ABCD intersect each other at O in s...

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  20. In the figure beside is a point on the extended part of CB.DeltaABC is...

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