, TMN3704
ASSIGNMENT 3 2026
DUE 8 JULY 2026
ACTIVITY 1
1.1 Define the concept of 2D shapes.
A two-dimensional (2D) shape is a flat shape that has only two dimensions: length and width (or
height). It is a concrete object that you cannot touch because it is not solid; you can only see and
identify it. (TMN3704, 2024:35)
1.2 Identify and explain any two key concepts from the definition of 2D shapes given in (1.1).
Two key concepts from the definition of 2D shapes are two-dimensional and not concrete.
Two-dimensional: This concept is central because it distinguishes 2D shapes from 3D objects.
The term "two-dimensional" means that the shape only has two measurable dimensions: length
and width (or height). It has no depth or thickness. This is a core characteristic that defines the
shape's flat nature. For instance, the concept of a triangle as a 2D shape is contrasted with a 3D
object like a triangular-based pyramid (TMN3704, 2024:35).
Not concrete: This concept refers to the abstract nature of a 2D shape. Unlike a
three-dimensional object, a 2D shape has no physical substance and cannot be touched. It is a
flat representation that can be seen and identified, but it is not a solid, tangible object. The
study guide illustrates this by differentiating between a 2D shape (a circle) and a 3D object (a
pizza), where the pizza is concrete, and the circle is flat and not tangible (TMN3704, 2024:35).
1.3.1 In which term(s) is the topic Properties of 2D shapes taught in Grade 5?
Term 3.
A Grade 5 lesson plan from Gauteng Province, which is aligned with CAPS, places the topic
"Properties of 2D shapes" in Term 3 . This is further supported by a Grade 5 Term 3 assessment
that includes this topic .
ASSIGNMENT 3 2026
DUE 8 JULY 2026
ACTIVITY 1
1.1 Define the concept of 2D shapes.
A two-dimensional (2D) shape is a flat shape that has only two dimensions: length and width (or
height). It is a concrete object that you cannot touch because it is not solid; you can only see and
identify it. (TMN3704, 2024:35)
1.2 Identify and explain any two key concepts from the definition of 2D shapes given in (1.1).
Two key concepts from the definition of 2D shapes are two-dimensional and not concrete.
Two-dimensional: This concept is central because it distinguishes 2D shapes from 3D objects.
The term "two-dimensional" means that the shape only has two measurable dimensions: length
and width (or height). It has no depth or thickness. This is a core characteristic that defines the
shape's flat nature. For instance, the concept of a triangle as a 2D shape is contrasted with a 3D
object like a triangular-based pyramid (TMN3704, 2024:35).
Not concrete: This concept refers to the abstract nature of a 2D shape. Unlike a
three-dimensional object, a 2D shape has no physical substance and cannot be touched. It is a
flat representation that can be seen and identified, but it is not a solid, tangible object. The
study guide illustrates this by differentiating between a 2D shape (a circle) and a 3D object (a
pizza), where the pizza is concrete, and the circle is flat and not tangible (TMN3704, 2024:35).
1.3.1 In which term(s) is the topic Properties of 2D shapes taught in Grade 5?
Term 3.
A Grade 5 lesson plan from Gauteng Province, which is aligned with CAPS, places the topic
"Properties of 2D shapes" in Term 3 . This is further supported by a Grade 5 Term 3 assessment
that includes this topic .
