# Microsoft Mathematics Tutorial 5 – Using the Triangle Solver

This is the 5th tutorial in the Math and Multimedia’s **Microsoft Mathematics Tutorial Series**. In this post, we use the* Triangle Solver* to construct triangles with specified side lengths and/or angle measures.

The *Triangle Solver* is very useful in constructing accurate triangle drawings. To construct the desired triangle, the user can specify the length of the sides or the measure of interior angles.

To display the *Triangle Solver*, click on the *Triangle Solver* icon on the toolbar. In the *Triangle Solver dialog box*, type the side lengths and/or angle measures of the triangle you want to construct. For example, triangle *ABC* where *a* = 4, *c*=5 and *B* = 30˚ (no need to insert the ˚ sign) will construct the triangle shown below. Notice that the* Triangle Solver* automatically computes the missing side lengths and angle measures. The blue numbers were typed by the user, and the green numbers were automatically computed.

**Practice**

Construct the following triangles. Press the **Clear** button when done to delete all the values in the text boxes.

- A = 35˚, B = 55˚ (angle C will automatically be computed)
- a = 8, b = 6, c = 10
- a = 4, b = 4, c =8 (Can you form a triangle using these side lengths? Why?)