Answer:
D.
Step-by-step explanation:
It just is hard to explain but I had the same question.
Step-by-step explanation:
Angle formed at the circumference of the circle is half of the angle formed at the center of the same circle.
Hence,

Answer:
We can't prove this with the SAS postulate.
Step-by-step explanation:
SAS means that two sides and the angle between those two sides are equal.
Side Angle Side (SAS)
That's why we can't prove this with the SAS postulate.