The statement below is followed by four options. Each option is related to the item in the statement, but only one is always true. Select the option that always holds and makes the statement true.
"A circle always has ______."
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → A centre
The answer must hold for every circle, without exception. An option that is present in most cases but can be missing in even one case is not always true.
Option (1) A centre — every point of a circle is at the same distance from a fixed point, its centre; there is no circle without one, so this is always true.
Option (2) A radius of 7 cm — a circle can be of any size; a circle of radius 3 cm is still a circle.
Option (3) Corners — this is never true: a circle is a smooth curve with no corners at all.
Option (4) A shaded inside — a circle drawn with a compass is usually just an outline, with nothing shaded.