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Angles
100
This angle measures exactly 90 degrees.
What is a right angle?
200
This angle measures less than 90 degrees.
What is an accute angle?
300
This angle measures more than 90 degrees but less than 180 degrees.
What is an obtuse angle?
400
The sum of these two angles measures 90 degrees.
What are complementary angles?
500
The sum of these two angles is 180 degrees.
What are supplementary angles?