# Shapes 1

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

- Common Shapes – Circles, Triangles, Rectangles and Squares
- Properties of Common Shapes
- 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.

- Circle
- Square
- Rectangle
- Triangle

**Answer: **

(4) Triangle

**Question 2: **

Name the shape below.

- Circle
- Square
- Rectangle
- Triangle

**Answer:**

(1) Circle

**Question 3: **

Name the shape below:

- Circle
- Square
- Rectangle
- Triangle

**Answer:**

(2) Square

**Question 4: **

What is the name of this shape?

- Square
- Rectangle
- Triangle
- Circle

**Answer:**

(2) Rectangle

**Question 5: **

Name the shapes in the figure below.

- circle and rectangle
- triangle and square
- circle and triangle
- rectangle and triangle

**Answer:**

(3) circle and triangle

**Question 6: **

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

- circle and square
- triangle and square
- circle and rectangle
- rectangle and triangle

**Answer:**

(3) circle and rectangle

**Question 7: **

How many squares are there in the figure below?

- 5
- 6
- 3
- 4

**Answer:**

(3) 3

**Question 8: **

How many triangles are there in the figure?

- 5
- 6
- 7
- 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?

- Square
- Rectangle
- Triangle
- Circle

**Answer:**

(1) Square

**Explanation:**

A square has 4 equal sides.

**Question 3: **

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

- Square
- Rectangle
- Triangle
- 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?

- True
- False

**Answer:**

(1) True

**Explanation:**

They are both triangles.

## 3. Grouping shapes

We can group shapes based on their:

**SHAPE**

They can be grouped as:

**SIZE**

They can be grouped as -

**COLOUR**

They can be grouped as -

**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?

- By size
- By colour
- By shape
- 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?

- By size
- By colour
- By shape
- 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?

- By size
- By colour
- By shape
- 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?

- 5
- 7
- 8
- 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?

- 6
- 7
- 8
- 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?

- 5
- 7
- 3
- 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?

- 5
- 2
- 7
- 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