Lines of symmetry

The Maths Habit Handout to print

Which of these letters could you fold so that one half lands exactly on the other?

A F H N S T X

A, H, T and X. F, N and S will not fold to match.

Line of symmetry

A fold line. One half lands exactly on the other.

1 line of symmetry

2 lines of symmetry

How many lines of symmetry?

2

Lines of symmetry = 2

Lines of symmetry = 1

Draw all the lines of symmetry.

Lines of symmetry = 2

Lines of symmetry = 4

Lines of symmetry = 2

Lines of symmetry = 1

Lines of symmetry = 2

Lines of symmetry = 1

Lines of symmetry = 2

Lines of symmetry = 0

Answer sheet

1. Sketch a quadrilateral with exactly one line of symmetry.

   A kite

2. How many lines of symmetry does a regular polygon with 9 sides have?

   9

3. A triangle has exactly 3 lines of symmetry. What type of triangle is it?

   Equilateral

1. Draw all the lines of symmetry on this shape.

   1 line, down the middle

2. How many lines of symmetry does an equilateral triangle have?

   3

3. Ravi says a rectangle has 4 lines of symmetry. Is he right? Explain.

   No, 2: a diagonal fold does not fit

Exit tickets to print