Circle vocabulary - tangent, arc, sector and segment
Circle vocabulary: tangent, arc, sector and segment.
- 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 tangent touches the circle at one point and is perpendicular to the radius there.
Example 2
Name the blue part of the circle.
An arc is part of the circumference.
Your turn
Name the blue part of the circle.
Check answer
A sector is bounded by two radii and their arc.
Name the blue part of the circle.
Check answer
A segment is bounded by a chord and its arc.
Name the blue part of the circle.
Check answer
A tangent touches the circle at one point and is perpendicular to the radius there.
Name the blue part of the circle.
Check answer
An arc is part of the circumference.
Name the blue part of the circle.
Check answer
A sector is bounded by two radii and their arc.
Name the blue part of the circle.
AnswerA sector is bounded by two radii and their arc.
Name the blue part of the circle.
AnswerA segment is bounded by a chord and its arc.
Name the blue part of the circle.
AnswerA tangent touches the circle at one point and is perpendicular to the radius there.
Name the blue part of the circle.
AnswerAn arc is part of the circumference.
Name the blue part of the circle.
AnswerA sector is bounded by two radii and their arc.