public void IsTriangleTest( )
{
Assert.AreEqual( true, shapeChecker.IsTriangle( triangle1 ) );
Assert.AreEqual( true, shapeChecker.IsTriangle( equilateralTriangle ) );
Assert.AreEqual( true, shapeChecker.IsTriangle( isoscelesTriangle ) );
Assert.AreEqual( true, shapeChecker.IsTriangle( rectangledTriangle ) );
Assert.AreEqual( false, shapeChecker.IsTriangle( idealCicle ) );
Assert.AreEqual( false, shapeChecker.IsTriangle( distorredCircle ) );
Assert.AreEqual( false, shapeChecker.IsTriangle( square1 ) );
Assert.AreEqual( false, shapeChecker.IsTriangle( square2 ) );
Assert.AreEqual( false, shapeChecker.IsTriangle( square3 ) );
Assert.AreEqual( false, shapeChecker.IsTriangle( rectangle ) );
}