Question

prove that angles opposite to the equal sides of a trianagle are equal​

Answer 1

Hope it's helpful for u.Plz mark on brainlist answer

Answer 2

so it is obvious that if two sides of triangle are equal so it is isoceles so
const: draw angle bisector of angleA and let the point of intersection of bisector of angleA and BC be D.
to prove:angleB =angleC
proof:in triangle BAD and CAD
AB=BC( given)
Angle BAD=AngleCAD( const)
AD=AD(common)
So triangle BAD Cong. to Triangle CAD
so angle B=angle C by cpct