Circle Terminology (Leaving Cert Mathematics): Flashcards

Set of points equidistant from a fixed point (centre)

Part of circumference between two points

Fixed point from which all circle points are equidistant

Line segment joining two points on circumference

Total distance around the circle

Chord through centre; longest chord

Line segment from centre to any point on circumference

Line touching circle at exactly one point

Region enclosed by two radii and arc between them

Region enclosed by chord and arc between chord's endpoints

Arc with diameter endpoints; divides circle into two halves

Circles with same centre but different radii

Single point where tangent touches circle

Angle with vertex at centre and sides are radii

Arc smaller than a semicircle