An obtuse angle is an angle greater than a right angle.
Father of geometry
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Cross Reference
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"The elements of geometry are derived from a small set of axioms and postulates."
Strange & Unusual"An acute angle is an angle less than a right angle."
Strange & Unusual"Proof by contradiction is a powerful tool."
Shocking"And the whole is greater than the part."
Philosophical"The postulates are not self-evident, but they are necessary for the development of geometry."
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