If diagonals of a square ACBD intersect at P, then the angle CPB is _______ degrees.
Choose the correct option:
If two angles are supplementary, then their sum is ___________
A. 90°
B. 180°
C. 270°
D. 360°
The area of a sector with radius 14 cm is 154 cm2. The central angle of the sector (in degrees) is