D'Nealian Handwriting would have been the choice of Marie Montessori had she been alive today. Her comments back in the early 1900's were, "Yet it does not seem natural that to write the letters of the alphabet, which are all rounded, it should begin with straight lines and acute angles." "Is it necessary to begin writing with the making of vertical strokes? A moment of clear and logical thinking is enough to enable us to answer, no. The child makes too painful an effort in following such an exercise."
Only lower case letter "x" has an angler line