Question

plzzz explain me the 11th question solution

Answer 1

To prove we must take Δ XYZ 

we know REFLEX ∠XPZ = 2∠XYZ
therefore we multiply both LHS and RHS by 2 
 
and finally we proves it .

Answer 2

Answer:

Angle XPZ = 2 angle YXZ + angle YZX