Download The square

‫محافظة الجيزة‬
‫ادارة الدقى‬
‫مدرسة الشهيد هشام بركات الرسمية للغات‬
Definition :
Parallelogram is a
quadrilateral , in
which each two
opposite sides are
parallel .
Properties of parallelogram:
I have
Each 2 opposite sides are
= in lengths
Each 2 opposite angles are
= in measure
The sum of measures of
each 2 consecutive angles
= 180
The 2 diagonals bisect
each other
Is a parallelogram with a right angle .
I have
Each 4
angles = 90
2 diagonals
are = in
length
Is a parallelogram in which 2 adjacent
sides are = in length .
I have
4 sides are = in
length
2 diagonal are perpendicular and
bisect each of its interior anglrs
Is a parallelogram with a right angle
and 2 adjacent sides are = in length .
I have
Each 4 sides are = in
lengths
Each 4 angles are = in
measure and = 90
The 2 diagonals are = in
length and perpendicular
The 2 diagonals bisect the
2 vertices angles
Perimeter of square ( rhombus ) = side length × 4
Perimeter of rectangle = ( length + width ) × 2
Internet Resources :
 http://math.rice.edu/~lanius/Geom/index.html
 http://www.coolmath.com/reference/rectangles
 http://www.mathwarehouse.com/geometry/quadrilaterals/parallelograms/rhombus.php
 http://www.mathopenref.com/coordsquare.html
 http://www.mathplanet.com/education/geometry/quadrilaterals/properties-ofparallelograms