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Back to Exercise: Recognize a line of symmetry for a two-dimensional figure

Exercises: Recognizing and Drawing Lines of Symmetry

Work through each section in order. For every figure, apply the fold test: if you folded
the figure along the line, would the two halves match exactly? Equal-looking pieces are
not enough -- they must be mirror images.

Grade 4·25 problems·~35 min·Common Core Math - Grade 4·standard·4-g-a-3
Work through problems with immediate feedback
A

Recall / Warm-Up

These problems review shape vocabulary from 4.G.A.1 and 4.G.A.2.

1.

Which type of triangle has three sides of different lengths?

2.

What type of angle is shown?

3.

Which statement correctly describes a square?

B

Fluency Practice

1.

The heart shape shown is folded exactly along the dashed vertical line, and the two
halves land on top of each other and match exactly. Is the dashed line a line of
symmetry for this heart shape?

2.

How many lines of symmetry does the square shown have in total?

3.

How many lines of symmetry does the scalene triangle shown have?

4.

How many lines of symmetry does the equilateral triangle shown have?

5.

How many lines of symmetry does the rectangle shown have? Remember: a line only
counts if folding along it makes the two halves match exactly.

6.

How many lines of symmetry does the regular hexagon shown have?

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