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题目

解题步骤

1. Understand the question

   what are obtuse angles?
   angles that are less than $90^\\circ$
   angles that are equal to $90^\\circ$
   angles that are greater than $90^\\circ$ but less than $180^\\circ$

2. Brief Explanations

   An obtuse angle is defined as an angle that falls between 90 degrees and 180 degrees, excluding both endpoints. The first option describes acute angles, and the second describes right angles.

3. Final answer

   Angles that are greater than 90° but less than 180°

答案

Question Analysis

OCR Text

what are obtuse angles?
angles that are less than $90^\\circ$
angles that are equal to $90^\\circ$
angles that are greater than $90^\\circ$ but less than $180^\\circ$

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