question_answer

In \[\Delta ABC,\] \[AB=AC\] and AD is perpendicular to BC. The property by which \[\Delta ADB\] is congruent to \[\Delta ADC\] is.

A)  SAS property

B)  SSS property   

C)  RHS property     

D)  AAA property

Correct Answer: C

Solution :

(c): In \[\Delta les\]ADB and ADC, \[AD=AD\] (common side) \[AB=AC\] \[\angle ADB=\angle ADC=90{}^\circ \Rightarrow \] congmency.