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 Interactive Checkpoint
 Right Angle:  An angle that measures exactly 90 degrees.

Which of the following angles below is a right angle?:
a) Angle that is less than 90 degrees.
b) Angle that is more than 90 degrees and less than 180 degrees.
c) Angle that is more than 180 degrees, but less than 360 degrees.
d) A straight angle.
e) A right angle.

Choose the answer from the menu. Graded Response