Abeer lethey
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Transcript of Abeer lethey
النهاية التالى
.Relation between two straight lines
Polygons
النهاية السابق التالى البداية
Has neither a starting point.nor ending point
We cannot measure its length
النهاية السابق التالى البداية
Has a starting point but.not has ending point
We cannot measure its lenght
النهاية السابق التالى البداية
Has a starting point and. ending point
We can measure its lenght
النهاية السابق التالى البداية
The two straight line AB&CD have only.one common point M
So they are called((intersecting lines
النهاية السابق التالى البداية
AB and CD form four (acute-obtuse(.angles
They are > AMC, >CMB., > BMD ,> DMA
The point is called ( (intersection point
النهاية السابق التالى البداية
AB and CD are two intersection straight.lines
They form four right angles at their intersection point M
النهاية السابق التالى البداية
They are called perpendicular or orthogonal straightlines
Is denoted by
So AB CD , CD AB
النهاية السابق التالى البداية
AB and CD have not a common point.( (intersection point
Then AB and CD are.(called (parallel lines
النهاية السابق التالى البداية
This is denoted by the. (// ( symbol
We write AB // CD orCD // AB
النهاية السابق التالى البداية
. H Parallel lines
. Intersection lines 5
.F Perpendicular lines
. X Intersection lines
. M Parallel lines
. N Parallel lines E Perpendicular lines, Parallel lines.Perpendicular lines 4
.T perpendicular lines
.L Perpendicular lines
النهاية السابق التالى البداية
Is a closed shapes formed from three sides or more (line( segment
Like (triangle ,pentagon ,Quadrilateral,Hexagon, octagon…( etcالنهاية السابق التالى البداية
النهاية السابق التالى البداية
. It has( 3 (sides
. It has( 3 (angles
. It has( 3 (vertices
Like (Right angled- triangle, acute angled -triangle, obtuse .(angled- triangle
النهاية السابق التالى البداية
. It has( 4 (sides
. It has( 4 (angles
.It has ( 4( vertices
Like :( square, rectangle , trapezium, parallelogram, .(Rhombus
النهاية السابق التالى البداية
The number of sides of any polygon is equal to the number of its vertices and equal to. the number of its angles
Number of angles =Number of vertices. =Number of sides
النهاية السابق التالى البداية
: Is a quadrilateral in which
Only two opposite sides are parallel but not equal.in length
In each of two opposite:figure
LM // NO
النهاية السابق التالى البداية
:Is quadrilateral in which
Each two opposite sides are equal in length and.parallel
AB//CD and AD//BC
AB=CD and AD=BC
A=>C and >B=>D>
النهاية السابق التالى البداية
: Is aquadrilateral in which
Its two diagonal bisect. each other
And not equal in length
. EM =MG ,FM = MH
GE = FH , FH = GE
النهاية السابق التالى البداية
:Is a quadrilateral in which
Each two opposite side are equal in length and. parallel
. XY // LZ , ZY // LX
. XY = LZ , YZ = LX
النهاية السابق التالى البداية
Its angles are equal in. measure
Each of them are right. ((90
m(>X ( = m(>Y(=m( >Z( = m (>L(=90
النهاية السابق التالى البداية
: Is a quadrilateral in which
Each two opposite sides
.are parallel
All sides are equal in.length
SU // TR , ST // UR
النهاية السابق التالى البداية
:Is a quadrilateral in which
Its sides are equal in length
.AB=BC=CD=DA
Each two opposite sides are Parallel
AB//CD , BC //AD
النهاية السابق التالى البداية
According to its sidelength
. Isosceles triangle (1
. Equilateral triangle(2
. Scalene triangle (3
According to its measures :of angles
.Right angled_traingle(1
.Acute angled_ triangle(2
Obtuse angled_(3 .triangle
النهاية السابق التالى البداية
Has two sides equal in. length
( XY = XZ (
The Three sides equal. in length( XY = XZ = ZY (
النهاية السابق التالى البداية
Has three sides equal in.length
(XY =XZ = ZY (
Has three angles equal.in measure
(m(>X( = m(>y( = m(>Z
النهاية السابق التالى البداية
Has one right angle and. two acute angles
m(>X(=90
Has three acuteangle
البداية السابق