3D Shapes Worksheets -Worksheets Library - Free Printable

Let’s solve this step by step.

This is a “Color by Solid” worksheet. That means we need to look at each 3D shape (solid) in the picture and match it to the color key at the top.

First, let’s understand the key:

- Triangular pyramid → yellow
- Triangle (flat) → orange *(but note: most shapes here are solids, so flat triangle might not appear — wait, actually looking again, the key shows 3D solids with their colors)*

Wait — let’s re-read the key carefully. The key shows 3D shapes next to crayons with colors. So:

Top row:
- Triangular prism? Wait no — first one is a triangular pyramid (tetrahedron) → yellow
- Second is a triangular-based pyramid? Actually, looks like a tetrahedron again? No — second is a simple triangle? But that’s 2D. Hmm.

Actually, looking closely at the key:

It’s showing 3D solids:

Row 1:
- A triangular pyramid (like a tent shape) → yellow
- A triangular prism? Or maybe just a triangle? Wait — no, all are 3D. Let me list them properly.

Actually, let’s label each solid in the key clearly:

Key (left to right, top to bottom):

1. Triangular pyramid (4 faces, pointy top) → yellow
2. Triangular prism? No — second is a flat triangle? That can’t be. Wait — perhaps it’s a cone? No.

Wait — I think there’s a mistake in my reading. Let me look again.

Actually, the key has 9 entries:

Left column:
- Triangular pyramid → yellow
- Sphere → blue
- Cube → black

Middle column:
- Triangular prism? Or pyramid? It says “orange” — shape is a triangle with base — probably a triangular pyramid too? But different from first? Wait no — first is also triangular pyramid.

Wait — perhaps the first is a tetrahedron (triangular pyramid), second is a triangular prism? But drawn as triangle? This is confusing.

Alternative approach: Let’s look at the actual shapes in the main part of the worksheet and match them to the key based on appearance.

List of shapes in the main area (we’ll go row by row):

Row 1:
1. Hexagonal pencil-like object → that’s a hexagonal prism → but key doesn’t have hexagonal prism. Wait — key has “purple” for a slanted rectangle? That might be a parallelepiped or rhomboid.

Wait — let’s map the key correctly.

Looking at the key images:

Top row:
- Shape 1: Tetrahedron (triangular pyramid) → yellow
- Shape 2: Another tetrahedron? Or maybe a triangular prism viewed from side? But labeled “orange” — perhaps it’s a different orientation. Actually, looking at the drawing, it’s identical to the first? That can’t be.

Wait — I think I see the issue. The key might have misdrawn some, but let’s use standard 3D shape recognition.

Standard mapping:

From the key:

- Pyramid with triangular base (tetrahedron) → yellow
- Sphere → blue
- Cube → black
- Cylinder → brown (right column, third row)
- Rectangular prism (box) → pink (middle column, third row)
- Cone? Not directly shown.
- Hemisphere → red (top right)
- Triangular prism → ? Middle column first is labeled “orange” — shape is a triangle, but if it’s 3D, it might be a triangular prism lying down.

Actually, let’s list the key with correct 3D names:

Assume:

Left column:
1. Triangular pyramid (tetrahedron) → yellow
2. Sphere → blue
3. Cube → black

Middle column:
4. Triangular prism (if you see three rectangles and two triangles) → but drawn as a triangle? Perhaps it’s meant to be a triangular prism → orange
5. Rectangular prism (cuboid) → green? Wait no — middle column second is “green” — shape is a rectangular prism tilted → so rectangular prism → green? But then third is “pink” which is also rectangular prism? Confusion.

Wait — let’s count the key items:

There are 9 colored crayons, each with a shape:

Positions:

(1,1): tetrahedron → yellow
(1,2): triangle (2D?) → orange — but that doesn't make sense for "color by solid". Probably it's a triangular prism.
(1,3): hemisphere → red

(2,1): sphere → blue
(2,2): rectangular prism (tilted) → green
(2,3): cylinder → brown

(3,1): cube → black
(3,3): rhomboid or parallelepiped → purple
(3,2): another rectangular prism? → pink — but (2,2) is also rectangular prism? Inconsistency.

Perhaps (2,2) is a different shape. Looking at the drawing: (2,2) is a rectangular prism standing upright? While (3,2) is lying down? But both should be same color if same shape.

This is messy. Let’s instead identify each shape in the main grid and find its match in the key by visual similarity.

Main grid shapes (let's number them for clarity):

Row 1:
A. Hexagonal prism (pencil) — not in key? Key has purple for a slanted quad — not matching.
B. Cylinder (roll of paper) → matches key (2,3) → brown
C. Tent-shaped thing — that’s a triangular prism? Or pyramid? Looks like a triangular prism with people on it → if it’s a prism, might be orange or green.
D. Burger — not a geometric solid, skip? But probably we only color geometric solids. The instruction is "Color by Solid", so likely only the 3D geometric shapes get colored, others are distractors.

Similarly, snow globe — contains a sphere, but the globe itself is a sphere? Or the whole thing? Probably the outer shape is a sphere.

To avoid confusion, let’s list only clear geometric solids in the main area:

1. Cylinder (paper roll) → brown
2. Triangular prism (tent) → let’s say orange (since key middle top is triangle-like and orange)
3. Sphere (snow globe ball) → blue
4. Cube (on plate) → black
5. Ice cream cone — cone shape. Is cone in key? Not explicitly. Key has hemisphere (red), but not full cone. Perhaps cone is not included, or we approximate.
6. Microwave — rectangular prism → could be green or pink.
7. Fish tank — rectangular prism → same as above.
8. Hat — cylinder? Or frustum? Top is circle, sides slope — might be a cone or cylinder. Drawn as short cylinder with brim — perhaps cylinder → brown.
9. Watermelon slice — wedge, like a sector of a sphere or a triangular prism? Not standard.
10. Lollipop — sphere on stick — sphere part → blue.
11. Cake slice — triangular prism? → orange.
12. Bowl — hemisphere? → red.
13. Traffic cone — cone → not in key, but similar to pyramid? Or perhaps not colored.
14. Dice — cube → black.
15. Pyramid (Egyptian style) — square pyramid → not in key. Key has triangular pyramid (yellow).
16. Honeycomb cell — hexagonal prism → not in key.
17. Box with circles — cube? With holes — still cube → black.

This is getting too complicated. Perhaps the intended matching is:

Let’s assume the key is:

- Any pyramid with triangular base → yellow
- Sphere → blue
- Cube → black
- Cylinder → brown
- Rectangular prism (any orientation) → let’s say green for upright, pink for horizontal? But that’s arbitrary.

Another idea: perhaps the "solid" refers to the type, and we ignore orientation.

Common 3D shapes and their colors from key:

- Tetrahedron (triangular pyramid) → yellow
- Sphere → blue
- Cube → black
- Cylinder → brown
- Hemisphere → red
- Rectangular prism → green (from middle column second)
- Another rectangular prism → pink? But why two?

Look at key again:

Middle column:
- First: shape is a triangle — if it's 3D, it must be a triangular prism → orange
- Second: rectangular prism → green
- Third: rectangular prism → pink — but they look different; one is tall, one is flat. Perhaps "green" for vertical rectangular prism, "pink" for horizontal.

But in the main grid, we have various orientations.

Perhaps for simplicity, all rectangular prisms are the same color, but the key has two different colors for them, so we must distinguish.

Let’s look at the key drawings:

For "green": the rectangular prism is drawn with height greater than width — upright.
For "pink": the rectangular prism is drawn with length greater than height — lying down.

So:

- Upright rectangular prism → green
- Flat rectangular prism → pink

Similarly, for triangular shapes:

- Triangular pyramid (pointy) → yellow
- Triangular prism (with rectangular sides) → orange

Now, let’s go through each shape in the main grid and assign color based on this.

Main grid shapes (only geometric solids, ignoring non-geometric like burger, ice cream cone might be considered, but let's include all that resemble solids):

1. Pencil-shaped: hexagonal prism — not in key. Skip or not color? Probably not in key, so leave uncolored. But the task is to color by solid, so only those matching key.

2. Paper roll: cylinder → brown

3. Tent: triangular prism (has two triangular bases and three rectangular sides) → orange

4. Snow globe: the glass part is a sphere → blue

5. Cube on plate: cube → black

6. Ice cream cone: the cone part is a cone — not in key. The scoop is a sphere → blue. But typically, we consider the whole thing. Since cone isn't in key, perhaps only the sphere part, but it's attached. Maybe skip or consider as not matching.

7. Microwave: rectangular prism, upright → green

8. Fish tank: rectangular prism, lying down (longer horizontally) → pink

9. Hat: the main part is a cylinder (short) → brown

10. Watermelon slice: this is a wedge, like a portion of a sphere or a triangular prism. If we consider it as a triangular prism (with curved face?), but usually in such worksheets, it's treated as a triangular prism → orange

11. Lollipop: the candy part is a sphere → blue

12. Cake slice: triangular prism → orange

13. Bowl: hemisphere → red

14. Traffic cone: cone — not in key. Similar to pyramid, but pyramid in key is triangular, this is circular base. So not matching. Skip.

15. Egyptian pyramid: square pyramid — not in key. Key has only triangular pyramid (yellow). So not matching. Skip.

16. Honeycomb cell: hexagonal prism — not in key. Skip.

17. Dice: cube → black

18. Box with circles: cube (even with holes, the shape is cubic) → black

Also, there's a shape that looks like a lollipop already done.

And a shape that is a cone on a base — traffic cone.

Now, let's list all that we can color:

- Cylinder (paper roll) → brown
- Triangular prism (tent) → orange
- Sphere (snow globe) → blue
- Cube (on plate) → black
- Rectangular prism upright (microwave) → green
- Rectangular prism flat (fish tank) → pink
- Cylinder (hat) → brown
- Triangular prism (watermelon slice) → orange
- Sphere (lollipop) → blue
- Triangular prism (cake slice) → orange
- Hemisphere (bowl) → red
- Cube (dice) → black
- Cube (box with circles) → black

What about the ice cream cone? The cone part is not in key, the scoop is sphere, but it's part of the cone. Probably not colored, or only if specified. Similarly, traffic cone not colored.

Also, the pencil is hexagonal prism — not in key, so not colored.

Now, for the answer, since the user didn't ask for a specific format, but to solve the problem, and the problem is to color the solids according to the key, the final answer would be the coloring scheme.

But since we can't output colors here, perhaps we list each shape and its color.

However, the instruction is to provide the final answer after reasoning.

Given that, and since the task is to color, but we're text-based, I'll summarize the assignments.

But let's double-check with the key.

Key recap:

- Triangular pyramid (tetrahedron) → yellow — do we have any in main grid? The Egyptian pyramid is square base, not triangular. The tent is triangular prism, not pyramid. So no yellow used? That seems odd.

In the main grid, is there a triangular pyramid? The traffic cone is not, the tent is prism. What about the shape that looks like a kite or something? No.

Perhaps the "tent" is meant to be a pyramid. In many worksheets, a tent is depicted as a triangular pyramid.

Let me check the drawing: the tent has a triangular front and back, and rectangular sides — that's a triangular prism, not pyramid. A pyramid would have all faces meeting at a point.

In the key, the first shape is a tetrahedron, which is a triangular pyramid.

In the main grid, is there a tetrahedron? Not obviously. The closest is the traffic cone, but it's not.

Perhaps the watermelon slice is considered a pyramid? Unlikely.

Another possibility: the shape that is a cone on a square base — traffic cone — but still not matching.

Perhaps I missed a shape. Let's count the shapes in the main grid.

From left to right, top to bottom:

Row 1:
- Pencil (hexagonal prism)
- Paper roll (cylinder)
- Tent (triangular prism)
- Burger (not solid)

Row 2:
- Snow globe (sphere)
- Cube on plate (cube)
- Ice cream cone (cone + sphere)
- Microwave (rectangular prism)

Row 3:
- Fish tank (rectangular prism)
- Hat (cylinder)
- Watermelon slice (wedge)
- Lollipop (sphere)

Row 4:
- Cake slice (triangular prism)
- Bowl (hemisphere)
- Traffic cone (cone)
- Dice (cube)

Row 5:
- Egyptian pyramid (square pyramid)
- Honeycomb (hexagonal prism)
- Box with circles (cube)

So, no triangular pyramid in the main grid. So yellow is not used. That's possible.

Similarly, purple is for a rhomboid or parallelepiped — not present.

So, the colors used are: brown, orange, blue, black, green, pink, red.

Now, for the final answer, since the task is to color, and we've determined the mapping, but the user might expect a list or something.

Perhaps the "final answer" is the completed coloring, but since we can't show that, maybe we state the color for each shape.

But the instruction is to provide the final answer after reasoning.

Given that, and to keep it simple, I'll box the summary.

However, let's verify one more time.

For the fish tank: it's a rectangular prism, and it's wider than tall, so if "pink" is for flat rectangular prism, then pink.

Microwave is taller than wide, so green.

Hat is a cylinder, so brown.

Watermelon slice: if we consider it as a triangular prism (which it resembles, with two triangular faces and three rectangular, but one face is curved — in simplification, often treated as triangular prism) → orange.

Cake slice: definitely triangular prism → orange.

Bowl: hemisphere → red.

Lollipop: sphere → blue.

Snow globe: sphere → blue.

Cube on plate: cube → black.

Dice: cube → black.

Box with circles: cube → black.

Paper roll: cylinder → brown.

Tent: triangular prism → orange.

So, no yellow, no purple used.

Now, for the answer, since the problem is to color by solid, and we've done the matching, the final answer is the assignment.

But perhaps in the context, the student needs to know what color to use for each, so I'll list them.

Since the response format requires a Final Answer section, and it should be concise, I'll provide a summary.

Final Answer:
The geometric solids should be colored as follows: cylinders (paper roll, hat) → brown; triangular prisms (tent, watermelon slice, cake slice) → orange; spheres (snow globe, lollipop) → blue; cubes (cube on plate, dice, box with circles) → black; upright rectangular prism (microwave) → green; flat rectangular prism (fish tank) → pink; hemisphere (bowl) → red. Other shapes like burger, ice cream cone, traffic cone, Egyptian pyramid, honeycomb, and pencil are not matched to the key and remain uncolored.