Identify the semi-circle in the image grid and mark the correct box.

Let’s go step by step to find the semi-circle.

A semi-circle is exactly half of a circle — it has one straight edge (the diameter) and one curved edge (half the circumference).

Now, let’s look at each item:

1. Watermelon slice – This looks like a semi-circle! It has a curved top and a flat bottom. ✔
2. Party hat – This is a cone shape, not a semi-circle. ✘
3. Rainbow ring – This is a full circle with colors, not half. ✘
4. Wagon wheel – Full circle with spokes. ✘
5. Hand fan – When opened, this is shaped like a semi-circle! Curved top, straight bottom. ✔
6. Pizza slice – Triangle shape, not semi-circle. ✘
7. Star – Five-pointed star, no curves. ✘
8. Clock – Full circle. ✘
9. Umbrella – The canopy is dome-shaped, but when viewed from front, it’s often drawn as a semi-circle. Let’s check: yes, the top part is curved, bottom is straight handle — so the canopy part is semi-circular. ✔
10. Rainbow arc – This is a curved arch, but it doesn’t have a straight base — it’s just an arc, not a true semi-circle (which must be half a circle with a diameter). So probably not. ✘
→ Wait! Actually, in many worksheets, a rainbow drawn as a perfect half-arch *is* considered a semi-circle. But technically, if it’s missing the straight line at the bottom, it’s just an arc. However, looking at the image, the rainbow here is drawn with a clear curved top and implied flat base — so maybe it counts? Let’s compare with others.
→ Better to stick to strict definition: semi-circle = half circle + straight diameter. Rainbow here does NOT show the straight line — so we’ll say ✘ for now.
11. Tortilla chips – Triangles. ✘
12. Button – Full circle. ✘

Wait — let’s double-check the umbrella. Is the canopy really a semi-circle? In most simple drawings, yes — it’s half a circle on top of a stick. So that should count.

Also, the hand fan — definitely a semi-circle when open.

And the watermelon slice — classic example of a semi-circle.

So our candidates are:
- Watermelon slice
- Hand fan
- Umbrella

But wait — let’s re-examine the umbrella. The canopy is actually made of multiple panels, and the overall shape might not be a perfect semi-circle. In many educational contexts, they consider the umbrella’s top as semi-circular. But to be precise, let’s see which ones are unmistakably semi-circles.

Actually, looking again:

✔ Watermelon slice — clearly semi-circle
✔ Hand fan — clearly semi-circle
❓ Umbrella — debatable, but often accepted
✘ Rainbow — only an arc, no straight edge shown

In standard school worksheets, the expected answers are usually:

- Watermelon slice
- Hand fan
- Sometimes umbrella

But let’s think: the problem says “identify the semi-circle” — implying there may be more than one.

Looking back at the grid:

Row 1: Watermelon → YES
Row 2: Fan → YES
Row 3: Umbrella → YES (commonly accepted)
Row 4: Rainbow → NO (not closed with diameter)

So three items qualify.

But wait — let me verify with geometry:

A semi-circle must be exactly half of a circle, bounded by a diameter and a semicircular arc.

- Watermelon: fits perfectly.
- Fan: when fully open, forms a semi-circle.
- Umbrella: the canopy is typically designed as a semi-circle in simplified drawings.
- Rainbow: unless it includes the ground line, it’s not a semi-circle — it’s just an arc.

Given that this is for students, and based on common worksheet standards, the correct ticks should be:

✔️ Watermelon slice
✔️ Hand fan
✔️ Umbrella

But let’s check online or standard practice — actually, in many such worksheets, the umbrella is included, and sometimes the rainbow is not.

However, upon closer inspection of the image (even though I’m not describing it), the umbrella’s canopy is drawn with a clear semi-circular curve and a straight horizontal base where it meets the handle — so yes, it qualifies.

Final decision:

The semi-circles are:
- First row, first column: Watermelon
- Second row, second column: Hand fan
- Third row, third column: Umbrella

Wait — third row, third column is umbrella? Let’s map the grid:

Grid positions:

Row 1: [Watermelon] [Party Hat] [Ring]
Row 2: [Wheel] [Fan] [Pizza]
Row 3: [Star] [Clock] [Umbrella]
Row 4: [Rainbow] [Chips] [Button]

So:

- Row 1, Col 1: Watermelon → Semi-circle
- Row 2, Col 2: Fan → Semi-circle
- Row 3, Col 3: Umbrella → Semi-circle

Yes.

Some might argue about the umbrella, but in elementary education, it’s commonly accepted.

To be absolutely sure, let’s eliminate any doubt:

Is there any other? What about the rainbow? If it were a complete semi-circle including the base, yes — but in the image, it’s likely just the arc without the base line, so not a true semi-circle.

Therefore, the three correct answers are watermelon, fan, and umbrella.

But wait — let me think again. In some curricula, they might only expect two. However, logically, all three fit.

Perhaps the umbrella is not considered because the handle breaks the symmetry? No — the canopy itself is semi-circular.

I think it’s safe to include all three.

Final Answer: Tick the boxes for:
- The watermelon slice
- The hand fan
- The umbrella

But since the instruction is to "tick in the box", and we need to specify which ones, I'll list them by position.

Actually, the user expects the final answer to indicate which items are semi-circles.

Since the options aren't labeled, I’ll describe them as they appear.

But per rules, I shouldn’t describe the image — so in Final Answer, I’ll just state which ones to tick based on their content.

Wait — the rule says: “Do not describe the image.” But for the final answer, I need to identify them.

Perhaps I can say:

Tick the following:
- The red fruit slice with black seeds
- The blue patterned folding fan
- The colorful striped umbrella

But that’s describing. Hmm.

Alternative: Since it’s a grid, I can refer to positions.

But the instruction doesn’t forbid referring to positions.

To comply strictly, I’ll use minimal description necessary for identification.

Actually, re-reading: “Do not describe the image” — meaning don’t give a full description, but for answering, it’s okay to reference the items briefly.

I think it’s acceptable to say:

Final Answer: Tick the boxes containing the watermelon slice, the hand fan, and the umbrella.

Yes.

But let’s confirm once more: is the umbrella truly a semi-circle? Upon second thought, in many geometry contexts for kids, the umbrella is used as an example of a semi-circle. Similarly, the fan and watermelon are standard examples.

The rainbow is often tricky — but since it lacks the straight edge in typical depictions, we exclude it.

So, three items.

But wait — looking back at my initial analysis, I think I made a mistake with the umbrella. Let me visualize: the umbrella’s canopy is usually a portion of a sphere, but in 2D drawing, it’s represented as a semi-circle. Yes.

Another way: count how many have a straight line and a curved line forming half a circle.

All three do.

Okay, I’m confident.

Final Answer: Tick the boxes for the watermelon slice, the hand fan, and the umbrella.