BE and CF are two equal altitudes of a triangle ABC. Using RHS congruence rule, prove that the triangle ABC is isosceles.
Solution:
In
and
(Given)
(Each given equal to
)
(Common)
Therefore, by RHS rule,
It means that
(Corresponding parts of congruent triangles are equal)
(In a triangle, sides opposite to equal angles are equal)
Therefore,
is isosceles.
siddharth says
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