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A triangle is a polygon with three edges and three vertices. It is one of the basic shapes in geometry. A triangle with vertices A, B, and C is denoted




A
B
C


{\displaystyle \triangle ABC}
.
In Euclidean geometry any three points, when non-collinear, determine a unique triangle and a unique plane (i.e. a two-dimensional Euclidean space). This article is about triangles in Euclidean geometry except where otherwise noted.

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  1. Kurt82

    A2 Triangle Endcap For Drop In Hand Guard Install

    Putting together for the first time a delta ring assembly with a triangle end cap for a carbine length drop in hand guard. My problem is that I don't understand how the gas port lines up and the dimple in barrel for the set screw with a end cap in front of the gas black which will throw off the...
  2. gun.deals

    Trijicon RMR 12.9 MOA Dual-Illuminated Triangle Sight - $352.99 shipped

    Trijicon RMR 12.9 MOA Dual-Illuminated Triangle Sight - $352.99 shipped
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