Lines of Symmetry in Shapes

The video tutorial explains the concept of symmetry using examples of a butterfly and basic geometric shapes. It introduces the idea of a line of symmetry and demonstrates how to identify symmetrical shapes, focusing on isosceles triangles, rectangles, and equilateral triangles. The tutorial concludes with a summary of the key points discussed.

What is the term used in mathematics to describe objects that are mirror images on either side of a line?

• Asymmetrical

• Symmetrical

• Parallel

• Perpendicular

What is the line called that divides a shape into two symmetrical parts?

• Median

• Diagonal

• Line of symmetry

• Axis of rotation

In an isosceles triangle, how many lines of symmetry can be found?

• One

• Two

• None

• Three

Which shape is used as an example to explain a single line of symmetry?

• Isosceles triangle

• Rectangle

• Circle

• Equilateral triangle

Which shape has two lines of symmetry, one vertical and one horizontal?

• Circle

• Triangle

• Square

• Rectangle

What should you do if you're unsure whether a shape has a line of symmetry?

• Use a ruler

• Draw a line and check for symmetry

• Guess

• Ask a friend

Which of the following shapes is likely to have more than one line of symmetry?

• Pentagon

• Rectangle

• Trapezoid

• Scalene triangle

How many lines of symmetry does an equilateral triangle have?

• Four

• Two

• Three

• One

What is the easiest line of symmetry to spot in an equilateral triangle?

• From bottom corner to top side

• From right corner to left side

• From left corner to right side

• From top corner to bottom side

What is the main topic discussed in the video?

• Types of triangles

• Properties of circles

• Symmetry in shapes

• Angles in polygons