Asked by  | 25th Jul, 2009, 05:24: AM

Expert Answer:

The  bisector of the angle  if it is the perpendicular then it divdes the triangle into two congruent triangles.

In triangle ABC, if AD is the angle bisector &also perpendicular then

ang BAD = angCAD


ang BDA =ang CDA =90 degrees

therefore triangle ADB is congruent to ADC

therefore AB =AC cpct

triangle ABC is an isosceles triangle.

Answered by  | 2nd Aug, 2009, 06:05: PM

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