Question

kindly solve this question this question based on congruency chapter

Answer 1

Hope its helpful to uhh

Answer 2

In triangle ADBand Triangle ADC
angle BAD= angleCAD - given
AB=AC-given
angle B=angleC -angles opposite to equal sides of a triangle are equal
Thus the triangles are congruent

Angles and sides can be proved by C.P.C.T
Angle ADB = angle ADC -by C.P.C.T
angle ADB +angle ADC=180degree - linear pair
Angle ADB+ angleADB =180 degree-ADB=ADC
2angleADB=180..
AngleADB=90..
angle ADC = angleADB=90 degree
Also BD = DC- proved above

HENCE PROVED