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[" 4.BE and CF are two equal altitudes o...

[" 4.BE and CF are two equal altitudes of a triangle ABC.Using RHS congruence "],[" rule.prove that the triangle "ABC" is isosceles."]

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BE and CF are two equal altitudes of a triangle ABC. Using RHS congruence rule, prove that the triangle ABC is isoscles.

BE and CF are two altitudes of a triangle ABC. Using RHS congruence rule, prove that the triangle ABC is isosceles.

In any triangle ABC : If (cosA)/a= (cosB)/b , prove that the triangle is isosceles.

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

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AD, BE and CF are altitudes of triangle ABC. If AD = BE = CF, prove that triangle ABC is an equilateral triangle.

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