CBSE Class 9 Answered
BE & CF r 2 equal altitudes of a triangle ABC using RHS proove that triangle ABC is isosceles
Asked by | 17 Jan, 2010, 07:41: PM
Expert Answer
In triangles BEC and CFB,we have
BE=CF.... given
angle BEC= angle CFB... each is 90 degrees
CB=CB .. common
so the triangles are cong by RHS rule
so
angel BCE= angle CBF.. CPCT
i.e. as far as triangle ABC is concerned,
angle B= angle C
So ABC is an isoceles triangle.
Answered by | 17 Jan, 2010, 10:36: PM
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