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Fondumental definitions (parts of straight line (Segment is a part of…
Fondumental definitions
parts of straight line
Ray
is each of twopart in tahth a line is divided by a point
Segment
is a part of line delimitated by two points
Adjent segment
they' re two consecutive segment thath lie on the same straight line
Consecutive segment
they' ve only a extream in common
Poligonal
is a succession of two or more consecutive segments in thath not succesive segments haven't a extreme in common
can be
open intralaced
closed intralaced
closed not intralaced
opened not intralaced
Convex figure
a plane figure is a convex if the segment joiing any two point insiide it lies wholly inside it
Concave figure
it isn' t a convex figure
parts of plane
Seed plane
is each part in thath a plane is divided by a line
Angle
is a part of plane
delimitated by two consecutive rays
Concave angle
doesn't contain the extencion thath forme the angle
Convex angle
contain the extencion of the rays thath forme the angle
Consecutive angle
have got only a late in common
Adjent angle
his not common lates lie on same straight line
Vertical angles
Acute
<90°
Round
=360°
Obtuse
+90°
Plane
=180°
Right
=90°
Explementary angles
are two angles thath add up a round angle
Supplementary angles
are two angles thath add up to a plane angle
Complementary angles
are two angles thath add up to a right angle