Line Symmetry - Worksheet 9 - 4th Grade

Hard

Identify lines of symmetry in two-dimensional figures (Hard)

18 problems · 10-15 minutes · Skills: geometry, symmetry

About This Worksheet

This hard-level worksheet contains 18 problems designed for 4th Grade students practicing line symmetry. Hard worksheets feature challenging problems including multi-step questions, missing values, and real-world applications to push students further.

Symmetry is a fundamental concept in mathematics, art, science, and nature. Recognizing symmetry develops spatial reasoning and prepares students for transformations, reflections, and patterns in geometry.

  • Identify lines of symmetry in geometric figures
  • Determine how many lines of symmetry a figure has
  • Draw lines of symmetry on given shapes
  • Recognize symmetry in letters, patterns, and real-world objects
  • Create symmetrical figures by reflecting across a line

How to Solve: Worked Example

Example Problem: Solve the first problem on the worksheet.
Solution Steps:
  1. Read the problem carefully.
  2. Identify what is being asked.
  3. Use what you know to find the answer.
  4. Check your work.
Answer: See the answer key below
Tip: Take your time and read each problem carefully before answering!
1
14 + 20 =
2
15 + 15 =
3
5 + 10 =
4
12 + 5 =
5
9 + 5 =
6
10 + 11 =
7
10 + 16 =
8
18 + 7 =
9
17 + 8 =
10
15 + 15 =
11
17 + 18 =
12
16 + 12 =
13
5 + 5 =
14
5 + 8 =
15
11 + 16 =
16
10 + 16 =
17
15 + 17 =
18
20 + 1 =

Answer Key

1. 342. 303. 154. 175. 146. 217. 268. 259. 2510. 3011. 3512. 2813. 1014. 1315. 2716. 2617. 3218. 21

Frequently Asked Questions

How do I download this line symmetry - worksheet 9 worksheet?

Click the "Download PDF / Print" button at the top of the worksheet. You can save it as a PDF or print it directly. The answer key will be on a separate page.

How do I find worksheets at different difficulty levels?

Each subtopic has 10 worksheets: Worksheets 1-3 are Easy, 4-7 are Medium, and 8-10 are Hard. Start with Easy worksheets to build confidence, then progress to harder ones.

What skills does this measurement and geometry worksheet cover?

This worksheet focuses on geometry, symmetry. It is designed for 4th Grade students and provides structured practice through varied problem types with a worked example to guide students before they begin.

Can I use this worksheet in my classroom?

Yes. All worksheets on K12Worksheets are free for classroom use. You can print copies for your entire class. With 10 worksheets per subtopic at three difficulty levels, you have plenty of options for differentiated instruction and individualized practice.

How many problems are on this worksheet?

This worksheet contains 18 problems. It typically takes 10-15 minutes to complete. An answer key with all solutions is included so parents and teachers can check work quickly.