acute triangles
All angles small
Acute triangles are triangles in which all three interior angles measure less than 90 degrees.
This distinguishes them from right triangles (one 90-degree angle) and obtuse triangles (one angle greater than 90 degrees).
The sail formed an acute triangle against the sky.
- anglesRotation between intersecting lines
- circumradiusCircumscribing circle's half-width
- sidesLateral edges or teams
- vertexPoint where edges converge
- interiorInside area or region
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