Internal angle

from WordNet (r) 3.0 (2006)
internal angle
    n 1: the angle inside two adjacent sides of a polygon [syn:
         {interior angle}, {internal angle}]
    
from The Collaborative International Dictionary of English v.0.48
Interior \In*te"ri*or\, a. [L., compar. fr. inter between: cf.
   F. int['e]rieur. See {Inter-}, and cf. {Intimate}.]
   [1913 Webster]
   1. Being within any limits, inclosure, or substance; inside;
      internal; inner; -- opposed to {exterior}, or
      {superficial}; as, the interior apartments of a house; the
      interior surface of a hollow ball.
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   2. Remote from the limits, frontier, or shore; inland; as,
      the interior parts of a region or country.
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   {Interior angle} (Geom.), an angle formed between two sides,
      within any rectilinear figure, as a polygon, or between
      two parallel lines by these lines and another intersecting
      them; -- called also {internal angle}.

   {Interior planets} (Astron.), those planets within the orbit
      of the earth.

   {Interior screw}, a screw cut on an interior surface, as in a
      nut; a female screw.

   Syn: Internal; inside; inner; inland; inward.
        [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
Internal \In*tern"al\, a. [L. internus; akin to interior. See
   {Interior}.]
   [1913 Webster]
   1. Inward; interior; being within any limit or surface;
      inclosed; -- opposed to {external}; as, the internal parts
      of a body, or of the earth.
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   2. Derived from, or dependent on, the thing itself; inherent;
      as, the internal evidence of the divine origin of the
      Scriptures.
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   3. Pertaining to its own affairs or interests; especially,
      (said of a country) domestic, as opposed to {foreign}; as,
      internal trade; internal troubles or war.
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   4. Pertaining to the inner being or the heart; spiritual.
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            With our Savior, internal purity is everything.
                                                  --Paley.
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   5. Intrinsic; inherent; real. [R.]
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            The internal rectitude of our actions in the sight
            of God.                               --Rogers.
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   6. (Anat.) Lying toward the mesial plane; mesial.
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   {Internal angle} (Geom.), an interior angle. See under
      {Interior}.

   {Internal gear} (Mach.), a gear in which the teeth project
      inward from the rim instead of outward.

   Syn: Inner; interior; inward; inland; inside.
        [1913 Webster] Internal-combustion
    

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