Introduction to 2d and 3d

What is a key difference between 2D and 3D shapes?

• 2D shapes are solid, while 3D shapes are flat.

• 2D shapes have three measurements, while 3D shapes have two.

• 2D shapes are flat, while 3D shapes are solid.

• 2D shapes can roll, while 3D shapes cannot.

Which of the following describes a square?

• It has 3 sides and 3 corners.

• It has 4 straight sides of different lengths.

• It has 5 straight sides and 5 corners.

• It has 4 straight sides and 4 corners, with all sides being the same length.

How many sides and corners does a regular hexagon have?

• 5 sides and 5 corners.

• 6 sides and 6 corners.

• 7 sides and 7 corners.

• 8 sides and 8 corners.

What are edges in a 3D object?

• The flat sides on an object.

• The corners where three or more edges meet.

• The lines where two faces meet.

• The measurements of length, height, and width.

What are the characteristics of a square-based pyramid?

• It has 4 faces, 4 vertices, and 6 edges.

• It has 5 faces, 5 vertices, and 8 edges.

• It has 6 faces, 8 vertices, and 12 edges.

• It has 4 triangular faces and 1 hexagonal base.