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A B C is a triangle is which B E and C F...

`A B C` is a triangle is which `B E` and `C F` are, respectively, the perpendiculars to the sides `A C` and `A B` . If `B E=C F` , prove that ` A B C` is isosceles.

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RD SHARMA ENGLISH-CONGRUENT TRIANGLE -All Questions
  1. P is a point equidistant from two lines l and m intersecting at poi...

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  2. A B C is a triangle and D is the mid-point of B C . The perpendiculars...

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  3. A B C is a triangle is which B E and C F are, respectively, the perpen...

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  4. In perpendiculars from any point within an angle on its arms are co...

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  5. In Figure, A D\ |C D\ and C B\ | CD If A Q=B P\ a n d\ D P=C Q , prov...

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  6. A B C D is a square, X\ a n d\ Y are points on sides A D\ a n d\ B C r...

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  7. Which of the following statements are true (T) and which are false ...

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  8. Fill in the blanks in the following so that each of the following st...

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  9. In a A B C ,\ if /A=45^0\ a n d\ /B=70^0dot Determine the shortest ...

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  10. In a A B C , if /A=50^0\ a n d\ /B=60^0 , determine the shortest a...

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  11. In Figure, P Q > P R. Q S\ a n d\ R S are the bisectors of / Q and /R ...

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  12. In Figure, sides L M\ a n d\ L N OF /\ LMN are extended to P\ a n d\ Q...

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  13. In Figure, P Q=P Rdot Show that P S > P Q

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  14. In Figure, A B > A C. Show that A B > A D.

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  15. If D is any point on the base B C produced, of an isosceles tria...

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  16. In Figure, if A D is the bisector of L A , show that: A B > B D (ii) ...

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  17. Show that in a right angled triangle, the hypotenuse is the longest...

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  18. In Figure, A C > A B and A D is the bisector of / A . Show that A D C ...

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  19. Show that the sum of the three altitudes of a triangle is less than...

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  20. Prove that any two sides of a triangle are together greater than tw...

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