Properties of Types of Angles The Properties of Types of Angles are: a) Zero angle measures exactly 0∘. b) Acute angle measures more than 0∘ and less than 90∘. c) Right angle measures exactly 90∘. d) Obtuse angle measures more than 90∘ and less than 180∘. e) Straight angle measures exactly 180∘. f ) Reflex angle measures more than 180∘ and less than 360∘. g) Complete angle measures exactly 360∘.
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