Arc = Part of the circumference of a circle.Or part of any curve.
Brackets = Symbols used in pairs to group things together.
Compass points = The directions on the magnetic compass.The 4 main points are North, South, East and West
Digit = A single symbol used to make a numeral.
Edge = For a polyhedron: A line segment where two faces meet
Example:
Foot = A unit of length (or distance) in US units equal to 12 inches.
Giga- = A prefix meaning one billion
Hour hand = The small hand on a clock that shows the hours.
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