as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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create a quiz to reflect the properties of circle
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question 1: what is the sum of the angles of a circle?
a) 0 degrees
b) 90 degrees
c) 180 degrees
d) 360 degrees

question 2: what is the circumference of a circle with radius of 4 cm?
a) 16 cm
b) 8 cm
c) 6.28 cm
d) 12.56 cm

question 3: what special theorem is associated with circles?
a) pythagorean theorem
b) laws of reflection
c) law of cosines
d) pythagorean-circles theorem
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