TRIANGULAR - MENTAL
A rational temperament is known more technically as ectomorph nature. If you fall into this category of humans, your head and face are easily recognised, as is your body type. You possess a slender wiry frame and your head is of an inverted triangular or pear shape. The high forehead indicates good intelligence, good high hairline, unblemished = good intelligence. You may make errors of judgement and choice in relationships & be suspicious, mistrusting and highly strung.
Your veins are quite prominent with hair that is fine, soft or silky. Your type is usually very restless. You are one of those people always on the go - active, quick, versatile and talkative. Your voice may also seem somewhat high pitched.
Because the mental type is curious and investigative, all of the areas that allow free reign to your thirsty intellect will provide the best fulfilment for you. For the most part you are known as an active, athletic and energetic individual but may somehow lack stamina and burn out quickly. You must learn the art of pacing yourself to maximise energy reserves.
Astrologically speaking, the air signs are Gemini, Libra and Aquarius. Even though Capricorn is an earth sign astrologically it is assigned the property of air in Ayurveda. The planets ruling air are Mercury, Dragons Head (Lunar North Node) and Saturn.
The Chinese Face readers refer to your face as a Fire Face and this results in you being bright, intelligent, sensitive, creative and very active. These traits do reflect a fiery nature, and so coupled with your fine thinking capacity, you possess positive traits of both elements - fire and air.