# Triángulos by Laura Givelly

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Hi all
Today the concept of the polygon know most studied "The Triangle"
which has 3 sides, 3 angles and 3 vertices
The vertices are designated by capital letters A, B and C
The same capital letters, with a "hat", to name the angle A, B and C
are common although the Greek letters α, β
The name of each side is expressed with a lowercase a, b and c
corresponding to the vertex opposite the side
Consider now a cartoon comic Mafalda and Triangles Classes
As sides we have:
Equilateral Triangle: Is having its three sides equal. Its three angles are also equal and each worth 60 °
Isosceles Triangle: Is having two equal sides. Has two equal angles which are adjacent to the base
Scalene Triangle: The three sides having different
Here also some symmetry axes for these same triangles
By its angles are:
Right triangle: is having one of its angles right
The hypotenuse is the side opposite the straight
The legs are the other two sides
and the right angle is represented by a square in the corner
Triangle Obstusángulo: is the one with an obtuse angle
Acute triangle: is the one with all acute angles
The triangles also have notable lines such as:
Height: line passing through a vertex and perpendicular to the opposite side
Median is each of the straight lines connecting the midpoint of one side to the opposite vertex.
Angle Bisector: the line through the vertex of the angle and divides it into two equal parts
Properties such as:
The sum of the three angles of a triangle is 180 °
The sum of the exterior angles of a triangle is 360 °