Question

answer fast anyone i need because of my exam​

Answer 1

Step-by-step explanation:

angle APD = 180-(angle PAD+angle PDA)

angle APD = 180-1/2(angle A+angle D)

2*angle APD=360- 2*1/2*(angle A+angle D)

2*angle APD= 360-(angle A+angle D)

but we know that

angles( A+B+C+D)=360

so 2*APD = A+B+C+D-A-D

so 2*APD = B+C