acute angles
Under ninety degrees
Acute angles are angles measuring less than 90 degrees—sharper than a right angle.
The term appears in geometry education and technical contexts: The triangle has three acute angles.
Acute suggests sharpness, so these angles come to a finer point than their obtuse counterparts.
- degreesUnits of measurement
- vertexPoint where edges converge
- protractorAngle-measuring instrument
- set squareTool for drawing angles
- radianArc-length angle unit
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