A: ∠A=∠A′,∠B=∠B′,AB=A′B′
B: ∠A=∠A′,AB=A′B′,AC=A′C′
C: ∠A=∠A′,AB=A′B′,BC=B′C′
D: AB=A′B′,AC=A′C′,BC=B′C′
如图,∠AOP=∠BOP=15°,PC∥OA交OB于C,PD⊥OA于D,若PC=6,则PD等于( )
34+52=____。
—— I'm going to Mary's birthday party. Bye, mom. ——_______, David!