Problem Analysis:
The worksheet is focused on understanding the properties of geometric shapes and objects, particularly in terms of edges, sides, faces, corners, and dimensions. Let's solve each part step by step.
---
Part 1: Fill in the blanks
#### a. A brick has ______ edges.
- A brick is a rectangular prism (cuboid). It has 12 edges.
-
Answer: 12
#### b. A square has ______ sides.
- A square is a 2D shape with 4 equal sides.
-
Answer: 4
#### c. A rectangle has ______ faces.
- A rectangle is a 2D shape and does not have "faces." It has 4 sides.
-
Answer: 0 (or this might be a typo; if it refers to sides, then 4)
#### d. A soap has ______ faces.
- Soap is typically cuboidal in shape, similar to a brick. A cuboid has 6 faces.
-
Answer: 6
#### e. A cuboidal box has ______ corners.
- A cuboid has 8 corners (vertices).
-
Answer: 8
#### f. The number of faces in a brick is equal to ______.
- A brick is a cuboid, which has 6 faces.
-
Answer: 6
#### g. A dice has ______ faces.
- A standard dice is a cube, which has 6 faces.
-
Answer: 6
#### h. A brick is a ______ dimensional object.
- A brick is a 3D object because it has length, width, and height.
-
Answer: 3
#### i. A triangle has ______ sides.
- A triangle is a 2D shape with 3 sides.
-
Answer: 3
#### j. A triangle has ______ corners.
- A triangle has 3 corners (vertices).
-
Answer: 3
---
Part 2: Count and write the number of faces you can see in each of the following figures and colour each of the faces using different colours.
We are given four 3D shapes. Let's analyze each one:
#### Figure 1:
- This is a cuboid (brick-like shape).
-
Visible Faces: 3 (front, top, and right side)
-
Answer: 3
#### Figure 2:
- This is a triangular prism.
-
Visible Faces: 4 (two triangular faces and two rectangular faces)
-
Answer: 4
#### Figure 3:
- This is a rectangular prism (cuboid).
-
Visible Faces: 3 (front, top, and right side)
-
Answer: 3
#### Figure 4:
- This is a combination of a cube and a triangular prism on top.
-
Visible Faces: 5 (front, top, right side, and two triangular faces)
-
Answer: 5
---
Final Answers:
1. Fill in the blanks:
- a.
12
- b.
4
- c.
0 (or
4 if referring to sides)
- d.
6
- e.
8
- f.
6
- g.
6
- h.
3
- i.
3
- j.
3
2. Number of visible faces:
- Figure 1:
3
- Figure 2:
4
- Figure 3:
3
- Figure 4:
5
---
Final Answer Box:
\[
\boxed{
\begin{array}{l}
\text{1. Fill in the blanks:} \\
\text{a. 12} \\
\text{b. 4} \\
\text{c. 0 (or 4)} \\
\text{d. 6} \\
\text{e. 8} \\
\text{f. 6} \\
\text{g. 6} \\
\text{h. 3} \\
\text{i. 3} \\
\text{j. 3} \\
\\
\text{2. Number of visible faces:} \\
\text{Figure 1: 3} \\
\text{Figure 2: 4} \\
\text{Figure 3: 3} \\
\text{Figure 4: 5} \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of class 4 maths worksheet.
