Virtual Nerd
Virtual Nerd: How Do You Find the Volume of a Triangular Pyramid?
Take a look at this tutorial to see this process of finding the volume of a triangular pyramid. [5:56]
Khan Academy
Khan Academy: Geometry: Part 1 of Proof of Heron's Formula
Demonstrates how to derive a version of Heron's formula using the Pythagorean Theorem and the formula for the area of a triangle. Applies Heron's formula to solve a sample problem. [10:59]
Khan Academy
Khan Academy: Triangles: Median Centroid Right Triangle Example
This video demonstrates how to find various measures of triangles formed by the medians of a right triangle.
Khan Academy
Khan Academy: Geometry: Part 2 of the Proof of Heron's Formula
Completes the proof of Heron's formula that was begun in the video, "Part 1 of Proof of Heron's Formula." [12:08]
Virtual Nerd
Virtual Nerd: How Do You Find the Volume of a Triangular Prism?
If you already know the length and height of the base and the height of the prism it's easy to find the volume of a triangular prism. In this tutorial, you'll see how to use that information and the formula for the volume of a triangular...
Loyola University Chicago
Math Flix: Formula Area of a Triangle
This QuickTime movie explains how to find the area of a triangle by developing an area formula and then demonstrates this by showing how to use the area formula. As you watch and listen to the teacher and student interact it helps...