🪞 Transformation - Reflection
Master reflection transformations. Learn how shapes can be reflected across lines, understand mirror images, and explore the properties of reflected figures.
What is Reflection?
Reflection creates mirror images! 🪞
Reflection is a transformation that flips a shape over a line called the mirror line. The reflected shape is a mirror image of the original, appearing on the opposite side of the line at the same distance. Reflection preserves size and shape but changes orientation.
The line across which the shape is reflected. It acts like a mirror, creating a perfect mirror image on the other side.
Each point in the reflected shape is the same distance from the mirror line as its corresponding point in the original shape.
The reflected shape appears flipped or reversed compared to the original, like looking in a mirror.
Key Concepts
Mirror Line Properties
Understand how the mirror line affects the reflection. Learn about vertical, horizontal, and diagonal lines of reflection.
Distance Preservation
Learn that corresponding points are equidistant from the mirror line. Understand how to measure and verify distances.
Visual Recognition
Develop the ability to recognize reflected shapes and understand how orientation changes in reflections.
Examples
Example 1: Vertical Reflection
Vertical Mirror Line
Steps to Reflect
Example 2: Horizontal Reflection
Horizontal Mirror Line
Common Applications
Example 3: Diagonal Reflection
Diagonal Mirror Line
Reflection Properties
Interactive Activities
Activity 1: Virtual Mirror
Use virtual mirrors to reflect shapes across different lines.
Activity 2: Reflection Detective
Identify which shapes are reflections of each other.
Activity 3: Mirror Line Finder
Find the mirror line that creates given reflections.
Activity 4: Reflection Creator
Create your own shapes and reflect them across different lines.
Practice Questions
Practise this with a free account
4 practice questions on this topic, from easy to 11+ level. Reading the guide is free for everyone; practice is for members, and signing up is free.
Study Tips
💡 Learning Strategies
- • Use real mirrors to understand reflection
- • Practice with simple shapes first
- • Draw mirror lines clearly
- • Measure distances carefully
- • Use tracing paper for practice
🚀 Exam Preparation
- • Know reflection properties
- • Practice with different mirror lines
- • Understand distance preservation
- • Use systematic approaches
- • Check work by reversing