📚 Topic Summary
Reflectional symmetry, also known as mirror symmetry, occurs when one half of a shape or image is the mirror image of the other half. A line of symmetry, or axis of symmetry, divides the shape into two identical halves. Identifying these lines helps us understand the balance and structure within various shapes and objects. This printable activity focuses on recognizing and drawing lines of symmetry in different shapes.
Let's dive into the activity! ✍️
🔤 Part A: Vocabulary
Match the term with its correct definition:
| Term |
Definition |
| 1. Symmetry |
A. A line that divides a shape into two identical halves. |
| 2. Reflection |
B. The exact correspondence of form on opposite sides of a dividing line or plane. |
| 3. Line of Symmetry |
C. A transformation that "flips" a figure over a line. |
| 4. Asymmetry |
D. Not symmetrical. |
| 5. Image |
E. The duplicate after a reflection. |
✍️ Part B: Fill in the Blanks
Complete the sentences using the words provided: identical, reflectional, line, symmetry, halves.
__________ symmetry is when a shape can be divided into two __________ parts by a __________. This __________ acts as a mirror, showing that each side is a __________ of the other.
🤔 Part C: Critical Thinking
Can a circle have more than one line of symmetry? Explain your answer.