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The bisectors of the angles B and C of ...

The bisectors of the angles B and C of a triangle `A B C` , meet the opposite sides in D and E respectively. If DE||BC , prove that the triangle is isosceles.

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RD SHARMA ENGLISH-TRIANGLES-All Questions
  1. In a quadrilateral A B C D , if bisectors of the /A B Ca n d/A D C mee...

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  2. In A B C , the bisector of /B meets A C at D. A line PQ||AC meets A B...

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  3. The bisectors of the angles B and C of a triangle A B C , meet the o...

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  4. In A B C ,/B=2/C and the bisector of /B intersects A C at Ddot Prove ...

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  5. In Figure, D E || B C , if A D=x ,D B=x-2,A E=x+2 and E C=x-1, find th...

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  6. Lex X by any point on the side BC of a triangle ABC. If XM, XN are d...

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  7. In Figure P Q is parallel to M Ndot if (K P)/(P M)=4//13 and K N=20. 4...

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  8. In Figure DE||BC and CD||EF. Prove that A D^2=A B*A F.

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  9. Da n dE are respectively the points on the side A Ba n dA C of a A B ...

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  10. ABCD is a parallelogram. P is a point on the side BC DP when produced ...

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  11. In Figure D E A C and D C a pdot Prove that (B E)/(E C)=(B C)/(C P)

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  12. Prove that the area of equilateral triangle described on the side of a...

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  13. Equilateral triangles are drawn on the sides of a right triangle. Show...

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  14. Two triangle ABC and D B C lie on the same side of the base B C . From...

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  15. A B C D is a quadrilateral; P , Q , Ra n dS are the points of trisecti...

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  16. A B C D is a parallelogram and A P Q is a straight line meeting B C at...

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  17. ABCD is a quadrilateral in which P, Q, R and S are mid-points of the...

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  18. Through the mid-point M of the side C D of a parallelogram A B C D , t...

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  19. D is the mid-point of side BC of a triangle ABC.AD is bisected ...

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  20. Fill in the blanks using the correct word given in brackets: (a) All...

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