right angles to the horizon

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fenglish

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Joined
Jun 14, 2009
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Other
Native Language
Chinese
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China
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China
Hi,

I found the definition of "vertical" from vertical: Definition, Synonyms from Answers.com,

adj.
  • Being or situated at right angles to the horizon; upright.
In above sentence, it says "right angles to the horizon", why it is "right angles", why it isn't "left angles"??

I think the "vertical" should be no any "left" or "right" direction to the horizon, it just related to "up" or "down".

Thanks.
 
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DougLewis

Junior Member
Joined
Oct 25, 2009
Member Type
English Teacher
Hi,

I found the definition of "vertical" from vertical: Definition, Synonyms from Answers.com,

adj.
  • Being or situated at right angles to the horizon; upright.
In above sentence, it says "right angles to the horizon", why it is "right angles", why it isn't "left angles"??

I think the "vertical" should be no any "left" or "right" direction to the horizon, it just related to "up" or "down".

Thanks.

A right angle is a mathematical expression describing a 90 degree angle from a line.

Vertical describes up and down from a horizontal plane.

Perpendicular is probably a better word.
 
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