Horizontal Lines of Symmetry (A) Worksheet | Fun and Engaging Year ... - Free Printable

Here is the step-by-step solution to the worksheet problems.

Section A: Tick the shapes that have a horizontal line of symmetry.

*To solve this, imagine folding each shape in half from top to bottom (like a hotdog bun). If the top half matches the bottom half perfectly, it has a horizontal line of symmetry.*

1. First Shape (Pentagon pointing right): If you fold this horizontally, the pointy part on the right will match, but the flat vertical side on the left won't align with anything. It does not match.
2. Second Shape (Up Arrow): The top is a triangle point, and the bottom is a flat rectangle base. They are different shapes. It does not match.
3. Third Shape (Division Sign / Two circles and a bar): The top circle matches the bottom circle. The middle bar folds onto itself. This one matches.
4. Fourth Shape (Three arrows): The top arrow points up. The bottom is empty space (or legs). They do not match.

Correct Answer for Section A: Only the third shape (the one that looks like a division sign) should be ticked.

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Section B: Tick the shapes that have a correct horizontal line of symmetry.

*Here, a dotted line is already drawn through the middle. We need to check if that specific line divides the shape into two identical mirror images.*

1. First Shape (Abstract polygon): Look at the top half and the bottom half relative to the dotted line. The angles and lines on top are a perfect mirror image of the ones on the bottom. This is correct.
2. Second Shape (D-shape on its side): The top is curved, but the bottom is a straight flat line. They do not match. This is incorrect.
3. Third Shape (Pentagon/House shape): The top is a pointed roof. The bottom is a flat square base. They do not match. This is incorrect.
4. Fourth Shape (Airplane): The top wing mirrors the bottom wing. The top tail fin mirrors the bottom tail fin. The nose is split evenly. This is correct.

Correct Answer for Section B: Tick the first shape and the fourth shape (the airplane).

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Section C: Draw a horizontal line of symmetry on the shapes.

*You need to draw a straight line across the middle of the shapes that allow it.*

1. Triangle (pointing right): This shape is symmetrical vertically (left-to-right), but not horizontally. The top slope and bottom slope meet at a point; they don't mirror each other across a horizontal middle. Do not draw a line.
2. Heart: If you draw a line across the widest part of the heart, the top curves match the bottom point? No, a standard heart has a vertical line of symmetry. However, looking closely at *this specific drawing*, it appears to be a geometric heart or a rotated shape? Actually, standard hearts do not have a horizontal line of symmetry. Do not draw a line. *(Note: In some very specific stylized fonts, a heart might, but in standard geometry, it does not. Wait, let me re-evaluate the "Heart" shape in typical primary math worksheets. Usually, they trick students here. A heart has vertical symmetry. It does NOT have horizontal symmetry. Leave it blank.)*
3. Concentric Circles (Bullseye): A circle looks the same from every angle. A line straight across the middle works perfectly. Draw a horizontal line through the center.
4. Square with inward arrows: The top arrow points down/in. The bottom arrow points up/in. They are mirror images of each other. Draw a horizontal line through the exact middle.

Correct Action for Section C: Draw a horizontal line on the Circles and the Square with arrows. Leave the Triangle and Heart blank.

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Section D: Select the shapes that have a horizontal line of symmetry and draw the line.

*Identify which ones work, then draw the line.*

1. Capsule/Pill shape: The top curve matches the bottom curve. Draw a horizontal line through the middle.
2. Octagon: Regular polygons with an even number of sides usually have horizontal symmetry. The top flat side matches the bottom flat side. Draw a horizontal line through the middle.
3. Megaphone/Speaker: The top slants out. The bottom slants out. They match. Draw a horizontal line through the middle.
4. Umbrella: The canopy is on top, but the handle hook is only on the bottom right. There is no matching hook on the top. It does not match. Leave blank.

Correct Action for Section D: Draw a horizontal line on the Capsule, the Octagon, and the Megaphone. Leave the Umbrella blank.

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Final Answer:

Section A:
* Tick the 3rd shape (the division sign symbol).

Section B:
* Tick the 1st shape (the abstract zigzag polygon).
* Tick the 4th shape (the airplane).

Section C:
* Draw a horizontal line across the middle of the Concentric Circles.
* Draw a horizontal line across the middle of the Square with inward-pointing arrows.
* *(Do not draw lines on the Triangle or the Heart).*

Section D:
* Draw a horizontal line across the middle of the Capsule/Pill shape.
* Draw a horizontal line across the middle of the Octagon.
* Draw a horizontal line across the middle of the Megaphone/Speaker.
* *(Do not draw a line on the Umbrella).*