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Diagonals AC and BD of a trapezium ABCD ...

Diagonals AC and BD of a trapezium ABCD with `AB||DC` intérsect each other at the point O.Using a similarity ciiterion for two triangles, show that `(OA)/(OC)=(OB)/(OD)`.

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R G PUBLICATION-TRIANGLES-EXERCISE
  1. State which pairs of triangles in are similar. Write the similarity cr...

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  2. In Fig. 6.35, triangleODC~triangleOBA,angleBOC=125^@ and angle CDO=70^...

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  3. Diagonals AC and BD of a trapezium ABCD with AB||DC intérsect each oth...

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  4. In Fig. 6.36, (QR)/(QS)=(QT)/(PR) and angle 1=angle 2.Show that triang...

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  5. S and T are points on sides PR and QR of triangle PQR such that angleP...

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  6. In Fig.6.38,altitudes AD and CE of triangleABCintersect each other at ...

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  7. In Fig.6.38,altitudes AD and CE of triangleABCintersect each other at ...

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  8. In Fig.6.38,altitudes AD and CE of triangleABCintersect each other at ...

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  9. In Fig.6.38,altitudes AD and CE of triangleABCintersect each other at ...

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  10. E is a point on the side AD produced of a parallelogram ABCD and BE in...

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  11. If Fig. 6.3 ,ABC and AMP are two right triangles right angled at B and...

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  12. If Fig. 6.3 ,ABC and AMP are two right triangles right angled at B and...

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  13. CD and GH are respectively the bisectors of angleACB and angleEGFsuch ...

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  14. CD and GH are respectively the bisectors of angleACB and angleEGFsuch ...

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  15. CD and GH are respectively the bisectors of angleACB and angleEGFsuch ...

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  16. In FIg. 6.40, E is a point on side CB produced of an isosceles triangl...

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  17. Sides AB and BC and median AD of a triangle ABC are respeetively propo...

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  18. D is a point on the side BC of a triangle ABC such thatangleADC=angleB...

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  19. Sides AB and AC and median AD of a triangle ABC are respectively propo...

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  20. A vertical pole of length 6 m casts a shadow 4 m long on the ground an...

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