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 Interactive Checkpoint
 Obtuse Angle:  An obtuse angle is greater than 90 degrees but less than 180 degrees.

Which of the following angles is an obtuse angle in the diagram to the right?:

a) <CIE,
b) <EIA,
c) <BIC (region from B to C in counterclockwise direction)
d) <CIA, and
e) <AIB


Choose the answer from the menu. Graded Response