Question

in the figure, prove AD bisect angle A and Angle D. (triangle ABC is an isosceles triangle)
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Answer 1

proved

In tri. ABC :-

AB=AC( Isosceles triangle)

<ABC =<ACB (equal sides of triangles have equal angles)

AD =AD (Common side)

Hence , congruent by SAS criteria

.

. . <BAD =< CAD

hence , proved AD os bisector of angle A

Similarly do with angle D

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