Handout
CK-12 Foundation

Ck 12: Geometry: Bisectors, Medians, Altitudes Study Guide

For Students 9th - 10th
This study guide on bisectors, medians, and altitudes covers key vocabulary, different theorems, and facts about the altitude and triangles. It is available for download with free registration.
Handout
Math Open Reference

Math Open Reference: The Incenter of a Triangle

For Students 9th - 10th
Learn about the incenter of a triangle with this handy reference guide. Provides a detailed definition, examples, and an interactive activity that enhances further explanation. Includes links to related topics.
Handout
Merriam-Webster

Merriam Webster: Dictionary Illustration: Incenter

For Students 9th - 10th Standards
A labeled illustration of an incenter inside a triangle.
Handout
University of Georgia

University of Georgia: Inter Math: Incenter

For Students 9th - 10th
This InterMath site gives a description of the incenter of a triangle along with a visual representation. Be sure to follow the links to related terms, everyday examples, challenging problems, and the interactive check point involving...