The triangle is a flat surface bounded by three lines that intersect two to two in three points called vértices.El triangle is the polygon with the least number of sides, three sides, three angles and three vértices.El symbol Δ is used to designate a triangle and the plural Δs, are used to name the letters of their vertices or a Roman numeral placed inside the triangle.

TRIÁNGULOSSEGÚN CLASSIFICATION sides

EQUILATERAL

has three equal sides

Isosceles has at least two equal sides. Equal sides form an angle that is contrary to a side called the base. The angle opposite the base is called the vertex angle.

SCALENE

not have equal sides

by Angles

acutangula

has its three angles acute.

RECTANGLE

has a right angle. The sides forming the right angle are called legs and the side opposite this angle is called the hypotenuse.

obtuse

has an obtuse angle.

STRAIGHT AND NOTEWORTHY POINTS OF THE TRIANGLE

In any triangle can observe and draw some lines and points for their properties and characteristics are important, they are:

MEDIUM

segment is drawn from one vertex to the midpoint of the opposite side.

has an obtuse angle.

STRAIGHT AND NOTEWORTHY POINTS OF THE TRIANGLE

In any triangle can observe and draw some lines and points for their properties and characteristics are important, they are:

MEDIUM

segment is drawn from one vertex to the midpoint of the opposite side.

is the point where the bisectors intersect and is also the center of the circle circumscribed to the triangle

is the point among the three bisectors and is also the center of the circle inscribed in the triangle

HEIGHT.

is the point where the three alturas.En Intersept every triangle the centroid, circumcenter and orthocenter are aligned, ie are collinear points as part of the so-called straight Euler.