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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.

**Angle Addition Postulate**

The angle addition postulate states that if D is in the interior of ∠ABC then ∠ABD + ∠CBD = ∠ ABC

The following diagram gives an example of the Angle Addition Postulate. Scroll down the page for more examples and solutions.

**Angle Addition Postulate and Angle Bisectors**

- How to use the Angle Addition Postulate to find unknown angle measures.
- How to use angle bisectors to find unknown angle measures.

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