In this Early Edge video lesson, you'll learn more about Triangles: Perimeter and Area, so you can be successful when you take on highschool Math & Geometry.
The Princeton Review

In this Early Edge video lesson, you'll learn more about Types of Angles, so you can be successful when you take on highschool Math & Geometry.
The Princeton Review

This interactive site defines a triangle’s orthocenter, explains why an orthocenter may lie outside of a triangle and allows users to manipulate a virtual triangle showing the different positions an orthocenter can have based on a given triangle.
Math Open Reference

This interactive site defines a triangle’s centroid, gives interesting facts of a centroid and allows users to manipulate a virtual triangle showing the different positions a centroid can have based on a given triangle.
Math Open Reference

In this Early Edge video lesson, you'll learn more about Equilateral, Isoceles and Scalene Triangles, so you can be successful when you take on highschool Math & Geometry.
The Princeton Review

This interactive site defines a circumcenter of a triangle, gives relevant properties of a circumcenter and allows users to manipulate a virtual triangle showing the different positions a circumcenter can have based on a given triangle.
Math Open Reference

In this Early Edge video lesson, you'll learn more about Triangles, so you can be successful when you take on highschool Math & Geometry.
The Princeton Review

This website shows an animated demonstration for constructing the orthocenter of a triangle using only a compass and straightedge. It also includes stepbystep written instructions for this process.
Math Open Reference

This website shows an animated demonstration for constructing the circumcenter of a triangle, and thus the circumcirlce of the triangle, using only a compass and straightedge. It also includes stepbystep written instructions for this process.
Math Open Reference

This website shows a stepbystep demonstration for constructing the incenter of a triangle using only a compass and straightedge. It also includes stepbystep written instructions for this process.
Math Open Reference
