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If altitudes from two vertices of a tria...

If altitudes from two vertices of a triangle to the opposite sides are equal prove that the triangle is isosceles.

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MODERN PUBLICATION-TRIANGLES-EXERCISE
  1. In a triangle, the angle opposite to the longer side is :

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  2. The sides opposite to two equal angles of a triangle are :

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  3. If altitudes from two vertices of a triangle to the opposite sides are...

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  4. State True or false Bisectors of unequal angle of an triangle may be ...

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  5. In triangleABC,A=46^@,B=74^@ then find angle C

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  6. If two right triangles, one side and an acute angle of one triangle ar...

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  7. True or False :ASA is not a Congruent Criteirorn.

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  8. an equilateral triangle?

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  9. By ASA Congruence Criterion, two angls and included side of one triang...

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  10. Sides opposite to…………..angles to a triangle are equal.

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  11. A triangleABC is obtuse angled at point B then the longest side is…………...

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  12. If in two triangles trianglePQR and triangleDEF, PR=EF, QR=DE,PQ=FD, t...

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  13. In an equilateral triangles all angles are……………. .

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  14. Difference of any two sides of a triangle is equal to the third side.

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

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  16. The sum of three altitudes of a triangle is ........... Than its perim...

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  17. In right triangleABC and triangleDEF, if hypotenuse AB=EF and side AC=...

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  18. If in two triangles triangleABC and trianglePQR, AB=QR angleA=angleQ a...

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  19. A triangle with sides measuring 6cm, 5 cm and 12 cm is……………..to draw.

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  20. Which of the following is not a criteria for congruence of triangles?

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