Dilations and Similarity Worksheet
📝 Worksheet medium ⏱️ 20 minutes 8 problems
Dilations and Similarity Worksheet
Grade 8 Mathematics LearnCrux.com
Name:
Date:
Directions
- Fill in each blank carefully.
- Circle or mark the best answer for each multiple-choice question.
- Match each prompt to the best option before writing your answer.
- Use the larger space to show your thinking on word problems.
1. A dilation changes a figure by a scale __.
2. Which statement is true about similar figures?
3. Match the scale factor to the effect: 1/2
Match with:
Answer:
4. If a side length of 6 becomes 18 after dilation, the scale factor is __.
5. Why does a dilation support similarity instead of congruence?
6. Which scale factor enlarges a figure?
7. When corresponding side lengths all scale by the same constant, the figures are often __.
8. Why should students check side-length ratios before calling figures similar?
📋 Teacher Answer Key
1. factor
2. They keep the same shape with proportional side lengths.
3. reduces the figure
4. 3
5. A dilation changes size while keeping angle measures and proportional side lengths, so the shape stays the same but the size may not
6. 2
7. similar
8. Consistent ratios show that the dilation relationship is real instead of based only on appearance