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Diagonals AC and BD of a trapezium ABCD ...

Diagonals AC and BD of a trapezium ABCD with AB || DC intersect each other at the point O. Using a similarity criterion for two triangles , show that `(OA)/(OC)=(OB)/(OD)` .
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NAND LAL PUBLICATION-TRIANGLES -EXERCISE 6.3
  1. State which pairs of triangles in Fig. are similar. Write the similari...

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  2. State which pairs of triangles in Fig. are similar. Write the similari...

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  3. State which pairs of triangles in Fig. are similar. Write the similari...

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  4. In fig., triangleODC-triangleOBA, angleBOC=125@0 and angleCDO=70@0. F...

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  5. Diagonals AC and BD of a trapezium ABCD with AB || DC intersect each o...

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  6. In fig., (QR)/(QS)=(QT)/(PR) and angle1=angle2 . Show that trianglePQS...

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  7. D is a point on side BC of Delta ABC such that AD = AC (see Fig. 7.47)...

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  8. In figure triangleABE=triangleACD show that triangleADE~triangleABC . ...

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  9. In figure, altitudes AD and CE of DeltaABC intersect each ther at the ...

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  10. In figure, altitudes AD and CE of DeltaABC intersect each ther at the ...

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  11. In Fig., altitudes AD and CE of triangleABC intersect each other at th...

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  12. In Fig., altitudes AD and CE of triangleABC intersect each other at th...

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  13. DeltaABC and DeltaDBC are two isosceles triangles on the same base BC ...

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  14. In Fig., ABC and AMP are two right triangles, right angled at B and M ...

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  15. In Fig., ABC and AMP are two right triangles, right angled at B and M ...

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  16. CD and GH are respectively the bisectors of angleACB and angleEGF such...

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  17. CD and GH are respectively the bisectors of angleACB and angleEGF such...

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  18. CD and GH are respectively the bisectors of angleACB and angleEGF such...

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  19. In Fig., E is a point on side CB produced of an isosceles triangle ABC...

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  20. If AD and PM are medians of triangles ABC and PQR, respectively where...

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