A:n边形的内角和等于(n﹣2)•180°
B:边长分别为3,4,5,的三角形是直角三角形
C:垂直于弦的直径平分弦所对的两条弧
D:圆的切线垂直于半径
Lingling likes _____ a book. ( )
— Yeah! I like the movie, too. It's so____.