Which circle has a central angle that measures 40 degrees ?
A
Image with description A circle has a center U. X V and X Z are the chords. Angle V X Z is 40 degrees.B
Image with description A circle has a center U. U Z and U V are the circle's radii. Angle V U Z is 40 degrees.C
Image with description A circle has a center U. Z V is a chord, and Z X is a tangent line that touches the circle at Z. Angle X Z V is 40 degrees.D
Image with description A circle has a center U. Z X is a diameter, and V X is a chord. Angle V X Z is 40 degrees.