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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 chords of a circle
Try out our new and fun Fraction Concoction Game.
Add and subtract fractions to make exciting fraction concoctions following a recipe.
There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics
of fraction addition and subtraction or challenge yourself with the insane level.
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