Lesson Objective

In this lesson, we will learn about line
symmetry and what is line of symmetry.

About This Lesson

Looking at the picture on the right, we can see that
the two sides of the picture are identical.
Knowing this, we can say that this picture is
symmetrical.

Now, we will learn about*line symmetry*
and what is *line of symmetry*.

You can proceed by reading the study tips first or watch the math video or try out the practice questions.

Now, we will learn about

You can proceed by reading the study tips first or watch the math video or try out the practice questions.

Tip #1

When we draw line across this equilateral
triangle as shown in the picture, we can see
that both sides of the triangle are the
identical.

With this, this triangle is symmetrical along this line and this line is called**line of
symmetry**.

The math video below will show you more on this visually.

With this, this triangle is symmetrical along this line and this line is called

The math video below will show you more on this visually.

Tip #2

Next, when we observe carefully, this equilateral
triangle in fact has **3 lines of symmetry**.

So next time, when you are given a shape to find all the lines of symmetry, be reminded to carefully analyze the shape carefully to avoid missing out any of these lines.

So next time, when you are given a shape to find all the lines of symmetry, be reminded to carefully analyze the shape carefully to avoid missing out any of these lines.

Math Video Transcript

Multiple Choice Questions (MCQ)

Now, let's try some MCQ questions to understand
this lesson better.

You can start by going through the series of questions on line symmetry or pick your choice of question below.

You can start by going through the series of questions on line symmetry or pick your choice of question below.

- Question 1 on finding the lines of symmetry of a five-pointed star
- Question 2 on line symmetry of a parallelogram