IMPORTANT DEFINITIONS ABOUT ANGLES AND LINES
Paralelle lines:They are lines wich never intersect themselves,so all points are equidistance
Oblique :They are lines wich are not paralelles noither perpendicular
Angles:It is a figured formed by two rays sharing a common endpoint
Types of angles
Complementary angles:they are angles couples of angles wich sum is 90º
Suplementary angles:they are couple of angles wich sum is 180º
Adyacent angles:they are angles that share one side and the vertex
Right angle: 90º
Obtuse angle: 120º
Flat:180º
Complete: 360º
The angle bisector
It´s an angle that divid´s in to parts equal
Grade of angles
15º
30º
45º
60º
120º
150º
Number of sides
- Triangle(3)
- Cuadrilateral(4)
- Pentagon(5)
- Hexagon(6)
- Heptagon(7)
- Octogon(8)
- Decagon(10)
- Dodecagon(12)
Types
- Concave
- Convex
- Star polygon
- Regular
- Irregular
- Inside Giving inside
Elements
- Sides
- Diagonal
- Vertex
- Altitude
Star polygon:It´s a particular polygon case with a star shape
Inscribed:They´re polygons place inside a circle
Circunscribed:They´re polygons surrander a circle
- Equiangular:All their corners angles or vertex are equal
- Equilateral:All edges or lines are equal
- Regular:All there vertex,angles or lines are equal
- Irregular:Different angles and lenths for their sides
IMPORTANT DEFINITIONS ABOUT TRIANGLES
Triangle:It´s a flat figure with three sides and three angles
Equilateral:3 sides equal
Isosceles :2 sides equal 1 unequal
Scalen:3 sides unequal
Right:1 agle of 90º
Acute:3 anles minor of 90º
Obtuse:1 angle greater of 90º
