I.T.E

Front

Circle

Back

A circle is plane figure bounded by a curved line called circumference, which is always equidistant from the Centre.

Front

Diameter

Back

is a straight line drawn through the Centre meeting the circumference at both ends.

Front

Radius

Back

is a straight line drawn from the Centre to the circumference.

Front

Arc

Back

is part of the circumference.

Front

Chord

Back

is any straight line drawn across the circle meeting the circumference at both ends.

Front

Tangent

Back

is a straight line which touches the circumference. It is always at right angles to the radius.

Front

Segment

Back

is part of a circle bounded by an arc and a chord.

Front

Sector

Back

is a part of a circle bounded by two radii and an arc.

Front

Quadrant

Back

is part of a circle bounded by two radii at right angles and an arc.

Front

Concentric circles

Back

are circles of the same Centre but different radii.