The Total solution for NCERT class 6-12
ABC is an isosceles triangle with AB = AC.Drawn AP тКе BC to show that тИаB = тИаC.
In ╬ФAPB and ╬ФAPC,
тИаAPB = тИаAPC (Each 90┬║)
AB =AC (Given)
AP = AP (Common)
тИ┤ ╬ФAPB тЙЕ ╬ФAPC (Using RHS congruence rule)
тЗТ тИаB = тИаC (By using CPCT)