Topic explanation

Standard explanation

For two chords intersecting inside a circle, the products of the two segment lengths are equal.

Key points

• intersecting chords theorem
• understand the idea
• apply it carefully
• keep the ideas separate
• Intersecting Chords Theorem: For two chords intersecting inside a circle, the products of the two segment lengths are equal.
• WHAT — INTERSECTING CHORDS THEOREM: For two chords intersecting inside a circle, the products of the two segment lengths are equal.
• HOW — Use the idea: Identify what is given, select this topic's rule or evidence, apply it one step at a time, and check
• CORE UNDERSTANDING: For two chords intersecting inside a circle, the products of the two segment lengths are equal.

Labelled diagram