Acute Triangle

$\begin{figure}\begin{center}\BoxedEPSF{AcuteTriangle.epsf}\end{center}\end{figure}$

A Triangle in which all three Angles are Acute Angles. A Triangle which is neither acute nor a Right Triangle (i.e., it has an Obtuse Angle) is called an Obtuse Triangle. A Square can be dissected into as few as 8 acute triangles.