Learn how to sine to find the area of a triangle.

This is the second version of a task asking students to find the areas of triangles that have the same base and height. This presentation is more abstract as students are not using physical models. They still determine the area of each...

Define's Heron's Formula and provides examples for how to use the formula to calculate the area of a triangle.

This CoolMath resource provides an introduction to some Precalculus formulas.

An interesting approach to how to analyze a speech. Presents a rhetorical pentangle as well as a rhetorical triangle, where each of the vertices represents an item to analyze. There is also an outline of the different areas to examine in...