Circle vocabulary - radius, diameter and chord
Circle vocabulary: radius, diameter and chord.
- Use the stated properties and diagram markings, rather than judging by appearance.
- Matching ticks mean equal lengths; matching arrows mean parallel lines.
- A small square marks a right angle. Keep labels horizontal and include units.
Example 1
Name the blue part of the circle.
A radius joins the centre to the circumference.
Example 2
Name the blue part of the circle.
A diameter is a chord through the centre; it is twice the radius.
Your turn
Name the blue part of the circle.
Check answer
A chord joins two points on the circumference.
Name the blue part of the circle.
Check answer
A radius joins the centre to the circumference.
Name the blue part of the circle.
Check answer
A diameter is a chord through the centre; it is twice the radius.
Name the blue part of the circle.
Check answer
A chord joins two points on the circumference.
Name the blue part of the circle.
Check answer
A radius joins the centre to the circumference.
Name the blue part of the circle.
AnswerA chord joins two points on the circumference.
Name the blue part of the circle.
AnswerA radius joins the centre to the circumference.
Name the blue part of the circle.
AnswerA diameter is a chord through the centre; it is twice the radius.
Name the blue part of the circle.
AnswerA chord joins two points on the circumference.
Name the blue part of the circle.
AnswerA radius joins the centre to the circumference.