1. محافظة الجيزة ادارة الدقى مدرسة الشهيد هشام بركات الرسمية للغات محافظة الجيزة ادارة الدقى مدرسة الشهيد هشام بركات الرسمية للغات

2. Definition Definition : Parallelogram is a quadrilateral, in which each two opposite sides are parallel.

3. 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

5. Is a parallelogram with a right angle. I have Each 4 angles = 90 2 diagonals are = in length

6. Is a parallelogram in which 2 adjacent sides are = in length. I have 2 diagonal are perpendicular and bisect each of its interior anglrs 4 sides are = in length

7. Is a parallelogram with a right angle and 2 adjacent sides are = in length.

8. 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

9. Perimeter of square ( rhombus ) = side length × 4 Perimeter of rectangle = ( length + width ) × 2

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