# Height

A Cuboid demonstrating the dimensions length, width and height

Height is the measurement of vertical distance, but has two meanings in common use. It can either indicate how "tall" something is, or how "high up" it is. For example one could say "That is a tall building", or "That airplane is high up in the sky". These can both be referred to as the height of the object, as in "The height of the building is 50m" or "The height of the airplane is 10 000m". When used to describe how high something like an airplane or mountain peak is from sea level, height is more often called altitude. Height is measured along the vertical (y) axis between a specified point and another point.

## In mathematics

For more details on this topic, see Height (mathematics).
Dimensional models assert height as the third dimension, more accurately referred to as depth,the other two being length and width, which form a two-dimensional plane of reference. In this model, the dimension of height is measured along a line traveling from the point in question and intersecting the plane of reference at a 90 degree angle.

## In geology

Although height is relative to a plane of reference, most measurements of height in the physical world are based upon a zero surface, known as sea-level. Both altitude and elevation, two synonyms for height, are usually defined as the position of a point above the sea-level. One can extend the sea-level surface under the continents: naively, one can imagine a lot of narrow canals through the continents. In practice, the sea-level under a continent has to be computed from gravity measurements, and slightly different computational methods exist, see Geodesy, heights.

## In geodesy

Instead of using the sea-level, geodesists often prefer to define heights from the surface of a reference ellipsoid, see Geodetic system, vertical datum.

Defining the height of geographic landmarks becomes a question of reference. For example, the highest mountain by elevation in reference to sea-level belongs to Mount Everest, located on the border of Nepal and Tibet; however the highest mountain by measurement of apex to base belongs to Mauna Kea in Hawaii, United States.

## In aviation

In aviation terminology, the terms height, altitude, and elevation are not synonyms. Usually, the altitude of an aircraft is measured from sea-level, while its height is measured from ground level. Elevation is also measured from sea-level, but is most often regarded as a property of the ground. Thus, elevation plus height can equal altitude. But the term altitude has several meanings in aviation, see Altitude in aviation.

## In human culture

Human height is one of the areas of study within anthropometry. As pointed out in an article [1] in The New Yorker, the average height of human populations appears to be a convenient metric for all the factors that make up a group's well-being. While height variations within a population are largely genetic, height variations between populations are mostly environmental.

The United Nations uses height (among other statistics) to monitor nutritional standards in developing nations. In human populations, average height can distill down complex data about the group's birth, upbringing, social class, diet, and health care system. However, the height of a human is not always directly connected or related to such things as nutrition, social class, etc.

In geometry, an altitude of a triangle is a straight line through a vertex and perpendicular to (i.e. forming a right angle with) the opposite side or an extension of the opposite side.
Human height, or how tall people become, generally varies little between people compared to other anthropometric measures. Exceptional height variation (around 20% deviation from average) is usually due to gigantism or dwarfism.
Distance is a numerical description of how far apart objects are at any given moment in time. In physics or everyday discussion, distance may refer to a physical length, a period of time, or an estimation based on other criteria (e.g. "two counties over").
Height in mathematics may refer to:
• Altitude (triangle)
• Height as a dimension, together with length and breadth
• Height (ring theory)
• Height function in Diophantine geometry quantifies the size of solutions to Diophantine equations
• Height of a polynomial

dimension (Latin, "measured out") is a parameter or measurement required to define the characteristics of an object—i.e., length, width, and height or size and shape.
Length is the long dimension of any object. The length of a thing is the distance between its ends, its linear extent as measured from end to end. This may be distinguished from height, which is vertical extent, and width or breadth
Length is the long dimension of any object. The length of a thing is the distance between its ends, its linear extent as measured from end to end. This may be distinguished from height, which is vertical extent, and width or breadth
dimension (Latin, "measured out") is a parameter or measurement required to define the characteristics of an object—i.e., length, width, and height or size and shape.
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Motto
जननी जन्मभूमिष्च स्वर्गादपि गरीयसी   (Sanskrit)
Tibet (see Name section below for other spellings) is a Plateau region in Central Asia and the indigenous home to the Tibetan people. With an average elevation of 4,900 metres (16,000 ft), it is the highest region on Earth and is commonly referred to as the "Roof of the World.
Mauna Kea is a dormant volcano in the Hawaiian Islands, one of five volcanoes which together form the island of Hawai'i. Pu'u Wekiu, one of numerous cinder cones on the summit plateau, is the highest point in the state of Hawaii at
State of Hawaii
Mokuʻāina o Hawaiʻi

Flag of Hawaii Seal of Hawaii
Nickname(s): The Aloha State

Motto
"In God We Trust"   (since 1956)
"E Pluribus Unum"   ("From Many, One"; Latin, traditional)
Anthem
Human height, or how tall people become, generally varies little between people compared to other anthropometric measures. Exceptional height variation (around 20% deviation from average) is usually due to gigantism or dwarfism.
Anthropometry (Greek ανθρωπος, man, and μετρον, measure, literally meaning "measurement of humans"), in physical anthropology, refers to the measurement of living human individuals for the purposes of
The New Yorker is an American magazine that publishes reportage, criticism, essays, cartoons, poetry and fiction. Originally a weekly, the magazine is now published 47 times per year with five (usually more expansive) issues covering two-week spans.
Genetics is the science of heredity and variation in living organisms.[1][2] Knowledge of the inheritance of characteristics has been implicitly used since prehistoric times for improving crop plants and animals through selective breeding.
(and largest city)
Official languages Arabic, Chinese, English, French, Russian, Spanish
Membership 192 member states
-  Secretary-General Ban Ki-moon
Establishment
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Statistics is a mathematical science pertaining to the collection, analysis, interpretation or explanation, and presentation of data. It is applicable to a wide variety of academic disciplines, from the physical and social sciences to the humanities.
Nutrition is a science that examines the relationship between diet and health. Dietitians are health professionals who specialize in this area of study, and are trained to provide safe, evidence-based dietary advice and interventions.
developing country has a relatively low standard of living, an undeveloped industrial base, and a moderate to low Human Development Index (HDI) score. In developing countries, there is low per capita income, widespread poverty, and low capital formation.
health care system is the organization and the method by which health care is provided. In practice, these systems vary widely from one country to another, and not all health care is delivered by way of a health care system.
Si, si, or SI may refer to (all SI unless otherwise stated):

In language:
• One of two Italian words:
• (accented) for "yes"
• si