Also called: Thumb opening · Acute-angled thumb · Obtuse-angled thumb · Right-angled thumb

Where on the hand: Measured from the edge of the palm to the extended thumb, with the hand relaxed and opened naturally.

What it looks like: Imagine a protractor arc from the palm's edge marked at 30°, 45°, 70° and 90°, and see which band the thumb naturally rests in.

The angle measures openness — of mind, of purse and of manner. The narrow thumb is guarded and self-contained; the middle range is the balanced norm; a right angle gives force and loyalty with a vengeful edge; beyond a right angle the reading turns to recklessness and extremism.

Western reading: Cheiro reads the extreme angle as fanaticism rather than as generosity.

is not a good sign for ordinary success. Such people go to extremes in everything they do and are generally fanatics in religion, social reform, or whatever line of thought occupies their attentionCheiro, Palmistry for All (1916)