[list=1][*]Create a circle centered at [i]A[/i] with radius [i]AB[/i].[/*][*]Estimate the midpoint of segment [i]AB[/i], mark it with the Point on Object tool, and label it [i]C[/i].[/*][*]Create a circle centered at [i]B[/i] with radius [i]BC[/i]. Mark the 2 intersection points with the Intersection tool. Label the one toward the top of the page as [i]D[/i] and the one toward the bottom as [i]E[/i].[/*][*]Use the Polygon tool to connect points [i]A, D, [/i] and [i]E[/i] to make triangle .[/*][/list]