More Lessons for High School Regents Exam

Math Worksheets

High School Math based on the topics required for the Regents Exam conducted by NYSED.

Intersecting Chords Theorem

If two chords intersect in a circle, the product of the lengths of the segments of one chord equal the product of the segments of the other.

For example, in the following diagram AP × PD = BP × PC

Segments in circles

Proof of a theorem on product of segments of chords in circles.

Intersecting Chord Theorem