Chord — Geometry, what it means and where it is taught
A segment joining two points on the circle.
Taught in Geometry.
Where it is taught
What it rests on
Work through these first if this one does not settle.
- Segment — Two endpoints and everything between them. Written AB.
Practise this idea
2 questions in the course bank use Chord, in Circle Angles, Arcs & Chords.
Problem 1
Two chords cross inside a circle cutting arcs 80° and 40°. Find the angle.
Worked answer
60
80 + 40 = 120
120 ÷ 2 = 60°
Problem 2
Two chords cross so the pieces are 3, 8 and 4, x. Find x.
Worked answer
6
3 × 8 = 4x
24 = 4x
x = 6