• sector ⪢⪢
http://qindex.info/i.php?x=12789

• sector ⪢⪢
http://qindex.info/i.php?x=19672

• 11 Circles: Radius, Diameter, Chords, Circumference, and Sectors
Circles: Radius, Diameter, Chords, Circumference, and Sectors
http://qindex.info/i.php?x=5011

• The Basic Naming of a Circle
center, radius, diameter, chord, arc, sector, segment, circumference, perimeter, secant, subtended #short #math
http://qindex.info/i.php?x=32638

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