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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
3 years, 1 month 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.

- 3 years, 1 month ago