๐ Topic Summary
In math, a reflection, sometimes called a "flip," is like looking at something in a mirror. Imagine you have a shape, and you place a mirror next to it. The reflection is what you see in the mirror. The original shape and its reflection are exactly the same size and shape, but they face opposite directions. The line where the mirror stands is called the line of reflection. Reflections help us understand symmetry and how shapes can be transformed.
๐ค Part A: Vocabulary
Match each term with its definition:
| Term |
Definition |
| 1. Reflection |
a. A transformation that flips a figure over a line. |
| 2. Line of Reflection |
b. The original figure before a transformation. |
| 3. Image |
c. The line over which a figure is flipped. |
| 4. Pre-image |
d. A transformation that slides a figure. |
| 5. Translation |
e. The figure after a transformation. |
โ๏ธ Part B: Fill in the Blanks
Reflections are a type of _______________ that creates a mirror image of a shape. The _______________ is the line over which the shape is flipped. The new shape after the flip is called the _______________. Reflections preserve the size and shape, meaning they are _______________ transformations. Understanding reflections helps us recognize _______________ in the world around us.
๐ค Part C: Critical Thinking
Can you find real-world examples of reflections in nature or everyday objects? Describe two examples and explain where the line of reflection is in each case.