Study P2 Mathematics Shapes and Patterns 1 - Geniebook

Shapes And Patterns

In this article, we will learn mainly about Shapes and the learning objectives are:

  1. Identify shapes
  2. Identify 3D shapes
  3. Identify flat and curved surfaces
     

1. Identify Shapes

Recap: Can you identify the name of these 2D shapes?

Note:

A square has 4 equal sides of the same length. However, a rectangle has 2 long sides and 2 short sides.

Two half circles will make one circle. 

Four quarter circles will make one circle.

 

 

Question 1:

Which two shapes are used to form the figure below?


 

  1. Triangle and square
  2. Triangle and rectangle
  3. Rectangle and square

 

Answer:

(2) Triangle and rectangle

 

 

Question 2:

The figure below is made by overlapping two shapes. Identify them.

  1. Half circle and square
  2. Half circle and rectangle
  3. Half circle and triangle

 

Solution: 

Answer:

(3) Half circle and triangle

 

 

Question 3:

How many quarter circles are there in the figure?

  1. 5
  2. 6
  3. 7
  4. 4

 

Answer:

(2) 6

 

 

2. Identify Lines And Curves

There are two types of lines - straight lines and curved lines.

  • A square has 4 straight lines and 0 curved lines.
  • A rectangle has 4 straight lines and 0 curved lines.
  • A triangle has 3 straight lines and 0 curved lines.

 

  • A circle has 1 curved line and no straight line.
  • A half circle has 1 straight line and 1 curved line.
  • A quarter circle has 2 straight lines and 1 curved line.

 

Question 1:

Which of the following shapes have the same number of straight lines?

  1. A and B
  2. A and D
  3. B and C
  4. B and D

 

Solution: 

The number of straight lines in A is 6, B is 8, C is 16 and D is 8. 

Answer:

(4) B and D

 

 

Question 2:

Which of the following shapes have the same number of curved lines?

  1. A and B
  2. A and C
  3. A and D
  4. C and D 

 

Solution: 

The number of curved lines in A is 2, B is 0, C is 3 and D is 2. 

Answer:

(3) A and D.

 

 

Question 3:

How many curved lines are there in the figure below?

  1. 8
  2. 10
  3. 11
  4. 12

 

Answer:

(4) 12

 

 

Question 4:

How many more straight lines than curved lines are there in the figure below?

  1. 5
  2. 8
  3. 10
  4. 13

 

Solution: 

The number of straight lines \(= 13 \)

The number of curved lines \(= 5\)

Difference in number of straight lines and curved lines

\(= 13 - 5\)

\(= 8\)

Answer:

(2) 8


 

Question 5:

How many more straight lines than curved lines are there in the figure below?

  1. 6
  2. 8
  3. 10
  4. 16

 

Solution:  

The number of straight lines \(= 16\)

The number of curved lines  \(= 6\)

Difference in number of straight lines and curved lines

\(= 16 - 6\)

\(= 10\)

Answer:

(3) 10


 

3. Identify 3D Shapes

A cube has six sides and each of them is a square.

Example: A Rubik’s cube, A dice etc.

 

A cuboid has six sides and at least four sides will be a rectangle. 

Example:  A brick, A shoebox, A tissue box etc.

 

This is a cone. Its base is made up of a circle.

Example: Ice-cream cone, A traffic cone, A birthday hat, etc.

 

A sphere does not have a flat surface. It looks like a circle from all directions. 

Example: Baseball, A ping pong ball etc.

 

This is a cylinder and it has two circles on each side with a tube in between. 

Examples: A coca cola can, A toilet paper roll, An unsharpened pencil etc.

 

 

Question 1:

Which two solid shapes are used to make the figure below?

  1. Cone and cube
  2. Cone and cylinder
  3. Cube and cylinder
  4. Cube and cuboid

 

Answer:

(2) Cone and cylinder

 

 

Question 2:

Which three solids are used to make the figure?

 

  1. Sphere, cone, cube
  2. Cone, cube, cylinder
  3. Sphere, cylinder, cuboid
  4. Cone, cylinder, cuboid

 

Answer:

(4) Cone, cylinder, cuboid

 

 

Question 3:

How many cubes more than spheres are there in the figure?

 

  1. 1
  2. 6
  3. 3
  4. 9

 

Solution: 

The number of cubes \(= 6\)

The number of spheres \(= 3\)

Difference in number of cubes and spheres

\(= 6 - 3\)

\(= 3\)

Answer:

(3) 3

 

 

4. Identify Flat And Curved Surfaces

 

Question 1:

Which of the following has no curved surface?

  1. A
  2. B
  3. C
  4. D

 

Answer:

(4) D

 

 

Question 2:

Which of the following has no flat surface?

  1. A
  2. B
  3. C
  4. D

 

Answer:

(3) C

 

 

Question 3:

How many flat surfaces are there in the figure?

  1. 4
  2. 5
  3. 3
  4. 6

 

Answer:

(2) 5


 

In this article, we learnt how to:

  1. Identify shapes
  2. Identify lines and curves
  3. Identify 3D shapes
  4. Identify flat and curved surfaces


 

Continue Learning
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Multiplication And Division 2 Addition And Subtraction 1
Addition And Subtraction 2 Fractions 1
Length 1 Mass 1
Volume 1 Money 1
Time 1 Shapes And Patterns
Picture Graphs 1 Model Drawing 1
Model Drawing 4  

 

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