Classifying shapes

What is the difference between 2D and 3D shapes?

• The difference between 2D and 3D shapes is the number of dimensions they have.

• 2D shapes are only used in art, while 3D shapes are used in science

• 2D shapes are always smaller than 3D shapes

• The difference is the color they are painted in

Name three examples of regular 2D shapes.

• Circle

• Pentagon

• Octagon

• Triangle, square, hexagon

Identify the irregular 3D shape that has 6 faces, 12 edges, and 8 vertices.

• Triangular prism

• Pentagonal prism

• Octagonal prism

• Hexagonal prism

What is the defining characteristic of a polygon?

• Shape with no defined area

• Open shape made up of curved line segments

• Closed shape made up of straight line segments

• Polygon with only one side

How many sides does a hexagon have?

• 4

• 8

• 6

• 10

Classify the shape of a basketball as 2D or 3D.

• 3D

• 2.5D

• 4D

• 1D

Which of the following is a regular polygon: a) Triangle b) Pentagon c) Octagon

• Hexagon

• Heptagon

• Pentagon

• Square

What is the difference between a regular and an irregular shape?

• A regular shape has all sides equal but not all angles, while an irregular shape has all angles equal but not all sides.

• The difference between a regular and an irregular shape is that a regular shape has all sides and angles equal, while an irregular shape does not have all sides and angles equal.

• A regular shape has all angles equal but not all sides, while an irregular shape has all sides equal but not all angles.

• A regular shape has all sides and angles equal, while an irregular shape has all sides equal but not all angles.

Identify the 3D shape that has all faces as triangles.

• Dodecahedron

• Tetrahedron

• Octahedron

• Cube

How many vertices does a cube have?

• 8

• 10

• 6

• 4