Question

Which of the following attributes differentiates a 3D shape from a 2D shape?

• A. Depth
• B. Size
• C. Weight
• D. Length

Answer 1

The correct option is A Depth

Say:
$\bullet$ We know that all 2D shapes have 2 attributes: Length and width

$\bullet$ The longer side is considered as length. It defines how long the shape is.

$\bullet$ The shorter side is considered as width. It defines how wide the shape is.

$\bullet$ Unlike 2D shapes, 3D shapes have 3 attributes: Length, width, and depth.

$\bullet$ Depth is the thickness of the solid shapes or 3D shapes. It defines how thick the shape is.

$\bullet$ Hence, depth differentiates a 3D shape from a 2D shape, and Option D is the correct answer.

Probing/ error analysis questions/ whiteboard