VOCABULARY
GEOMETRY : Is a matter that studie the elements operations .
POINT : Is a place that two lines intersec . The point hasn't got a :dimension , height and width .
LINE : It's a dimension that never finish . Because hasn't got points .
RAY : It's an object that go to point to point . It got an start and a finish .
MINDPOINT : Is a line segment .
LINE SEGMENT : It's a line wiht two endpoint .
ENDPOINT : Aline that start and end .
LENGHT : Measurement of something from end to end .
GEOMETRIC DRAWING AND SUPPLES COCEPTS AND DEFINITIONS
FREEHAND : Drawing with out intruments only with your hand .
COMPASS : It's an instrument that we use for do circules and arcs . Also for measuring distance
between two points .
PROTACTOR : It's an instrument for measuring drawing angles on a paper usualy flat
semicircular transparent plastic sheet graduated .
SET SQUARE : There are two special rulers with a triangular shapes . One is called the 45º and
the other called the triangle 60º / 30º.
ERASER : We use for limitade lines .
RULER : Element to do perfect lines .
IMPORTANT DEFINITIONS ABOUT CIRCLES
CIRCLE : Is a curve line to adistance to a point called center .
CIRCUNFERENCE: Is a full circle.
CENTER : Is a point equidistant to any points on a circle .
RADIUS : A length of a line segment from the center to its perimeter .
DIAMETER: Is a line segment . Is the double than the radius but the diameter it has to past to the center.
CHORD : A line segment wich conects two points of the circle but don't past to the center is perpendicular .
ARC : Segment of a circle .
ARROW: It's a line segment enter chord and arc pass to the center .
IMPORTANT DEFINITIONS ABOUT ANGLES AND LINES
PARALLES :There are two lines which never intersect thenselves so all their points are eaquidistant .
PERPENDICULAR:They are two lines that intersect in a point and made 4 angles of 90º.
OBLIQUE: Two lines which aren't parallels and perpendiculars.
ANGLES:It's a figure formade of two lines , intersect in a point.
TYPES ANGLES
Complementary angle: There are two angles that form a 90º angle
Splementary angle: There are two angles that form a 180º angle.
TYPES OF ANGLES ( form)
THE ANGLE BISECTOR
When i divide an angle into two equals parts.
OPERATIONS WITH ANGLES
ADITION
SUBTRACTION
MULTIPLY
DIVISION