This worksheet explores the fundamental concepts of symmetry in geometry, specifically focusing on line (reflectional) symmetry and rotational symmetry. It challenges students to identify lines of symmetry in various shapes and letters, determine the order of rotational symmetry, and calculate the angle of rotation for complex geometric patterns. From common shapes like circles and flowers to iconic symbols, the test provides a comprehensive review of how objects can be reflected or rotated while maintaining their original appearance.
رقم الاختبار987
الصفالصف التاسع المتقدم
المادةرياضيات
الفصلالفصل الثالث
السنة الدراسية2025/2026
عدد الأسئلة13
إجمالي النقاط13
تاريخ الإضافة2026-04-23
الزيارات9
المعلم أو الناشرWayground
اختر إجابة واحدة لكل سؤال. عند الاختيار ستظهر النتيجة فورًا: الأخضر صحيح، والأحمر خطأ، وسيظهر تفسير الإجابة مباشرة إن كان متوفرًا. وبعد آخر سؤال ستظهر الدرجة النهائية تلقائيًا.
Question 1
Points: 1
How many lines of symmetry does this shape have?
Explanation
The horizontal double-headed arrow has two lines of symmetry: one horizontal line passing through the points and one vertical line bisecting the shaft.
Question 2
Points: 1
How many lines of symmetry does this shape have?
Explanation
The letter 'M' has exactly one vertical line of symmetry passing through its center.
Question 3
Points: 1
What type of symmetry do all 3 images have in common?
Explanation
All three shapes shown have at least one line of reflectional symmetry.
Question 4
Points: 1
How many lines of symmetry does a circle have?
Explanation
A circle has infinitely many lines of symmetry, as any line passing through its center point is a line of symmetry.
Question 5
Points: 1
What is the angle of rotation?
Explanation
The shape has 10-fold rotational symmetry. The angle of rotation is calculated as \(360^{\circ} / 10 = 36^{\circ}\).
Question 6
Points: 1
What is the angle of rotation?
Explanation
The shape has rotational symmetry of order 4. The smallest angle of rotation is \(360^{\circ} / 4 = 90^{\circ}\).
Question 7
Points: 1
What is the angle of rotation?
Explanation
The symbol has 3-fold rotational symmetry. The angle of rotation is \(360^{\circ} / 3 = 120^{\circ}\).
Question 8
Points: 1
What is the angle of rotation?
Explanation
The star-shaped geometric pattern has 6-fold rotational symmetry. The angle of rotation is \(360^{\circ} / 6 = 60^{\circ}\).
Question 9
Points: 1
How many lines of symmetry does the flower have?
Explanation
The flower has 6 identical petals, resulting in 6 lines of symmetry.
Question 10
Points: 1
Does the picture have rotational symmetry?
Explanation
The shape can be rotated by \(120^{\circ}\) to map onto itself, confirming it has rotational symmetry.
Question 11
Points: 1
What is the angle of rotational symmetry?
Explanation
The triskelion shape has order 3 rotational symmetry, so the angle is \(360^{\circ} / 3 = 120^{\circ}\).
Question 12
Points: 1
How many shapes have MORE THAN ONE line of symmetry?
Explanation
Shapes A, B, C, F, G, and I each possess more than one line of symmetry.
Question 13
Points: 1
Does this image have a line of symmetry?
Explanation
The symbol has a vertical line of symmetry passing through the center.
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