Question

Can anyone answer 9th question plz

Answer 1

Answer:

Step-by-step explanation: in triangle BDC since BC = DC

=>base angles are equal

=>angle DBC = angle BDC= x

=>by angle sum property, in triangle BDC

angle DBC + angle BDC + angle C = 180°

=>x +x + 40° = 180°

=>2x + 40° = 180°

=>2x = 180° - 40°

=>2x = 140°

=>x = 140/2

=>x=70°

=>angle BDC = 70°

Answer 2

Angle 1 = Angle 2 opposite angle of equal side I think it's helpful for u