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Circle Investigation

Math 7: Circle vocabulary from Investigation 2

The distance around a circle. circumference
The distance across a circle through its center. diameter
The distance from the center of circle to any point on the circle. radius
Part of the circumference of a circle. arc
A region bounded by an arc of a circle and two radii. sector
Two or more circles with the same center. concentric circles
A segment that passes through the interior of a circle and has both endpoints on the circle. chord
A polygon whose vertices are on a circle and whose other points are inside the circle. inscribed polygon
A half circle semicircle
An angle whose vertex is the center of a circle. central angle
The distance from the pivot point and the marking point of a compass when drawing a circle. radius
The point that is the same distance from any point on a circle. center
An angle that opens to the interior of the circle from a vertex on the circle. inscribed angle
What professions might require the use of compasses, circles and arcs? architecture, engineering or any profession that involves navigation with maps
Created by: opfer