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Shapes 1

 In this article, we will learn about shapes and focus on:

  1. Common Shapes – Circles, Triangles, Rectangles and Squares
  2. Properties of Common Shapes
  3. Grouping Shapes

1. Common Shapes

Some shapes and their examples are given below:

Other items in the shape of a circle: ball, clock, and coin.

Other items in the shape of a triangle: slice of watermelon, flag, roof, and Christmas tree.

Other items in the shape of a rectangle: tissue box, television, keyboard, shoebox, door, handphone, table, bed, book, and red packet.

Other items in the shape of a square: pizza box, and square book.

Remember that all the sides of a square are equal, whereas, in rectangles, the opposite sides are equal. 

Spot and name the shapes in the picture

  • Circle – clock, a picture on the wall, and drum.
  • Square – cushions and a picture on the wall.
  • Rectangle – three pictures on the wall, television, speakers, books, and TV console table.
  • Triangle – designs on the cushions.

Match it!

Amelia was tasked by her mother to buy items of the following shapes from the supermarket. Can you name the items to their correct shapes?

Solution: 

Circle – watermelon and orange
Triangle – sandwich and a slice of pizza
Square – biscuit and bread
Rectangle – milk and a bar of chocolate

 

Question 1: 

Name the shape below.

  1. Circle
  2. Square
  3. Rectangle
  4. Triangle

Answer: 

(4) Triangle

 

Question 2: 

Name the shape below.

  1. Circle 
  2. Square
  3. Rectangle
  4. Triangle

Answer:

(1) Circle 

 

Question 3: 

Name the shape below:

  1. Circle 
  2. Square
  3. Rectangle
  4. Triangle

Answer:

(2) Square

 

Question 4: 

What is the name of this shape?

  1. Square 
  2. Rectangle
  3. Triangle
  4. Circle                                                                                                                      

Answer:

(2) Rectangle

 

Question 5: 

Name the shapes in the figure below.

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

Answer:

(3) circle and triangle

 

Question 6: 

Sam used 2 shapes to draw the robot below. Name the shapes.

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

Answer:

(3) circle and rectangle

 

Question 7: 

How many squares are there in the figure below?

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

Answer:

(3) 3

 

Question 8: 

How many triangles are there in the figure?

  1. 5
  2. 6
  3. 7
  4. 8       

Answer:

(4) 8

 

Question 9: 

Which group does not contain a square?

Answer:

(3) Rectangle, circle, triangle, rectangle

Explanation:
1) Rectangle, circle, triangle, square
2) Rectangle, circle, square, triangle
3) Rectangle, circle, triangle, rectangle
4) Rectangle, circle, triangle, square

2. Properties of common shapes

Triangle - A triangle has 3 sides and 3 vertices. Vertices are the points where two sides meet.

Square – A square has 4 equal sides and 4 vertices.

Circle – Circles are round in shape.

Rectangle – A rectangle has 4 sides and 4 vertices.

Let’s Try This.

Put the shapes into the correct boxes that describe their properties.

Solution:

A triangle has 3 vertices.
A square has 4 equal sides.
A circle is round.

Question 1: 

I have 3 vertices and 3 sides. What shape am I? 

Answer: 

(1) Triangle

Explanation:

A triangle has 3 vertices and 3 sides. 

 

Question 2: 

I have 4 equal sides. What shape am I?

  1. Square
  2. Rectangle
  3. Triangle
  4. Circle

Answer:

(1) Square

Explanation:

A square has 4 equal sides. 

 

Question 3: 

I do not have any vertices. What shape am I?

  1. Square
  2. Rectangle
  3. Triangle
  4. Circle

Answer: 

(4) Circle

Explanation:

A circle is round and does not have any vertices. 

 

Question 4: 

The figures below are of the same shapes. Is the statement true or false?

  1. True
  2. False

Answer:

(1) True

Explanation:

They are both triangles. 

3. Grouping shapes

We can group shapes based on their:

  1. SHAPE 

They can be grouped as:

  1. SIZE

They can be grouped as -

  1. COLOUR

They can be grouped as -

  1. NUMBER OF SIDES AND VERTICES

They can be grouped as –

 

Question 1: 

We can group shapes by __________, __________, __________, __________ and __________.

Answer:

shapes, colours, sizes, sides and vertices.

 

Question 2: 

How are the shapes below being grouped?

  1. By size
  2. By colour
  3. By shape
  4. By sides and vertices

Answer:

(1) By size

Explanation:

The shapes in the first box are large in size, whereas the shapes in the second box are small in size. 

 

Question 3: 

How are the shapes below being grouped?

  1. By size 
  2. By colour
  3. By shape
  4. By sides and vertices

Answer: 

(2) By colour

Explanation:

The shapes in the first box are blue whereas the shapes in the second box are yellow.. 

 

Question 4: 

How are the shapes below being grouped?

  1. By size 
  2. By colour
  3. By shape
  4. By sides and vertices

Answer:

(3) By shape

Explanation:

The shapes in the first box are all triangles, whereas the shapes in the second box are all squares. Therefore, they are grouped by shapes. 

 

Question 5:

Karen cut out some pieces of paper into different shapes and grouped them as shown below. Where should she place the paper below?

Answer:

Group B

Explanation:

Karen should place the paper in Group B as they are the same shape: Square.

 

Question 6: 

How many triangles and circles are there in the figure altogether?

 

  1. 5
  2. 7
  3. 8
  4. 9

Answer:

(4) 9

Explanation:

There are 4 triangles and 5 circles. 

\(4 + 5 = 9\)

 

Question 7:

How many triangles are there in the figure?

 

  1. 6
  2. 7
  3. 8
  4. 9

Answer:

(4) 9

Explanation:

There are 8 triangles in the sun and 1 triangle beside the chimney.  

\(8 + 1 = 9\)

Challenge yourself

Question 1: 

How many more squares than triangles are there in the figure?

 

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

Answer:

(3) 3

Explanation:

There are 7 squares and 4 triangles in the figure. 

To find the difference, we need to subtract 4 from 7. 

\( 7 - 4 = 3\)

 

Question 2: 

How many more circles than rectangles are there in the figure?

 

  1. 5
  2. 2
  3. 7
  4. 9

Answer:

(1) 5

Explanation:

There are 7 circles and 2 rectangles in the figure.  

To find the difference, we need to subtract 2 from 7. 

\(7 - 2 = 5\)

Summary: Shapes and their Properties

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