Question

which type of triangle is these​

Answer 1

Answer:

Triangle

Triangle illustration.svg

A triangle

Edges and vertices

3

Schläfli symbol

{3} (for equilateral)

Area

various methods;

see below

Internal angle (degrees)

60° (for equilateral)

triangle, tri, three, angle

Triangle = Tri (three) + Angle

In Euclidean geometry, any three points, when non-collinear, determine a unique triangle and simultaneously, a unique plane (i.e. a two-dimensional Euclidean space). In other words, there is only one plane that contains that triangle, and every triangle is contained in some plane. If the entire geometry is only the Euclidean plane, there is only one plane and all triangles are contained in it; however, in higher-dimensional Euclidean spaces, this is no longer true. This article is about triangles in Euclidean geometry, and in particular, the Euclidean plane, except where otherwise noted.