central angles
Circle's vertex-centered angles
A central angle is an angle whose vertex sits at the center of a circle, with its two sides extending outward as radii to points on the circle's circumference.
The arc between those two points corresponds directly to the angle's measure—a central angle of 90 degrees, for instance, spans one quarter of the circle.
Central angles are fundamental in geometry for calculating arc lengths and sector areas.
- degreesUnits of measurement
- piCircle's fundamental ratio
- vertexPoint where edges converge
- radiusCenter-to-perimeter distance
- trigonometryTriangle angle mathematics
arc length · pie chart · sector · slice of pie · pizza slice · arc · circle · subtended · chord · measurements · sine · diameter · mathematics · theorem · circumference · tangent · segment · clock hands
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