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In Fig.6.59, ABC is a triangle in which ...

In Fig.6.59,
ABC is a triangle in which `angleABC<90^@ and AD_|_BC`.Prove that `AC^2=AB^2+BC^2-2BC.BD`.

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R G PUBLICATION-TRIANGLES-EXERCISE
  1. In Fig.6.57, D is point on hypothenuse AC of triangleABC,such thatBD|A...

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  2. In Fig.6.58, ABC is a triangle in which angleABC>90^@ and AD|CBproduce...

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  3. In Fig.6.59, ABC is a triangle in which angleABC<90^@ and AD|BC.Prove ...

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  4. In Fig.6.60, AD is a median of a triangle ABC and AM|BC.Prove that :(i...

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  5. In Fig.6.60, AD is a median of a triangle ABC and AM|BC.Prove that :(i...

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  6. In Fig.6.60, AD is a median of a triangle ABC and AM|BC.Prove that ...

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  7. In Fig.6.61, two chords AB and CD intersect each other at the point P....

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  8. In Fig.6.61, two chords AB and CD intersect each other at the point P....

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  9. In Fig.6.62, two chords AB and CD of a circle intersect each other at ...

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  10. In Fig.6.62, two chords AB and CD of a circle intersect each other at ...

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  11. State basic proportionality theorem.

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

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

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

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

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  16. State Pythagoras theorem.

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

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

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

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

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