Shapes and Their Attributes
Grade 1 · Math · Study Guide
Learn about flat and solid shapes and what makes each one special.
Shapes are all around us! Flat shapes (also called 2D shapes) are shapes you can draw on paper. A circle is perfectly round with no corners. A triangle has 3 sides and 3 corners (called vertices). A square has 4 equal sides and 4 corners. A rectangle has 4 sides and 4 corners, but two sides are longer than the others.
Solid shapes (also called 3D shapes) take up space. A cube looks like a box with 6 square faces. A sphere is round like a ball. A cone looks like an ice cream cone — it has a circular base and a point at the top. A cylinder looks like a can — it has two circle faces and a curved side.
When we describe shapes, we talk about their sides, corners (vertices), and faces. These are called attributes. Knowing attributes helps us sort and compare shapes and recognize them in real life.
| Shape | Sides | Vertices | Real-Life Example |
|---|---|---|---|
| Circle | 0 | 0 | Wheel, coin |
| Triangle | 3 | 3 | Slice of pizza, road sign |
| Square | 4 equal | 4 | Tile, cracker |
| Rectangle | 4 (2 pairs) | 4 | Door, book |
| Hexagon | 6 | 6 | Honeycomb cell |
Key terms
- 2D shape
- A flat shape that can be drawn on paper, like a circle, triangle, or square
- 3D shape
- A solid shape that takes up space, like a cube, sphere, or cone
- side
- A straight edge of a flat shape
- vertex (vertices)
- A corner where two sides meet
- face
- A flat side of a 3D shape
Flashcards
- Triangle
- A flat shape with 3 sides and 3 corners
- Rectangle
- A flat shape with 4 sides and 4 corners; opposite sides are equal
- Cube
- A 3D shape with 6 square faces (like a dice)
- Sphere
- A perfectly round 3D shape (like a ball)
- Vertex
- A corner of a shape where two sides meet
- Hexagon
- A flat shape with 6 sides and 6 corners
Practice questions
How many sides does a triangle have?
- 2
- 4
- 3
- 5
Show answer
Answer: 3
A triangle always has exactly 3 sides and 3 vertices
A circle has no vertices (corners).
Show answer
Answer: True
A circle is perfectly round and has no corners or straight sides
A shape with 4 equal sides and 4 corners is called a ___.
Show answer
Answer: square
A square has 4 equal sides and 4 right-angle corners
Which 3D shape looks like a can of soup?
- Cube
- Sphere
- Cone
- Cylinder
Show answer
Answer: Cylinder
A cylinder has two circular faces and a curved side, like a soup can
Which shape has 6 sides?
- Pentagon
- Hexagon
- Octagon
- Square
Show answer
Answer: Hexagon
A hexagon has 6 sides and 6 vertices
Fun facts
- Honeybees build hexagon-shaped cells in their hives because hexagons fit together perfectly with no wasted space!
- A square is actually a special kind of rectangle — all squares are rectangles, but not all rectangles are squares.
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