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Angle Classification

Angles can be grouped into three classes:

  • Acute: angles with measure \( < 90^\circ \).
  • Right: angles with measure \( = 90^\circ \).
  • Obtuse: angles with measure \( > 90^\circ \).
  • Straight: angles with measure \(= 180^\circ \).

Note by Arron Kau
2 years, 11 months ago

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I prefer it this way:

\[0^\circ<\text{acute angles}<90^\circ\]

\[90^\circ<\text{obtuse angles}<180^\circ\].

Also there is a practice question about straight angles, but you don't have anything about it here. Mursalin Habib · 2 years, 11 months ago

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