Triangles are found all over the place in everyday life. In fact the triangle is the most often used shape in the engineering of houses. On your way home try to count all of the triangles in a single home design. To find the area of any triangle we require two measures: the length of the base and the length of the line that can be drawn (known as height) from the vertex to that same base. Having the ability to calculate the measure of area tells us how much space these shapes take up. While many students will just see this skill as something happens and stays on a piece of paper, understand the area of a triangle has a ton of applications in the everyday world. Most forms of architecture would be impossible without the foundation and structural strength of triangles. The shape gives rise to a very strong structure. Because the shape is made of three straight lines it also helps us predict the position of integral structures when constructing homes. Equilateral triangles are often used to construct roofs of homes and buildings. Have you taken a look at the roof at where you live?

The worksheets that are here work on the area of various triangles using the information provided about the lengths of their sides. The sheets look at how to calculate the area of various figures that have been plotted on a coordinate grid (the correct formulas have been provided). In this section you will find mixed triangles (some right triangles and some non-right). These worksheets will also demonstrate how to use a coordinate grid to determine the attributes of triangles. The coordinate plane comes in handy when working to be exact.