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.
Recall / Warm-Up
These problems review shape vocabulary from 4.G.A.1 and 4.G.A.2.
Which type of triangle has three sides of different lengths?
Equilateral triangle
Isosceles triangle
Scalene triangle
Right triangle
What type of angle is shown?
Right angle
Acute angle
Obtuse angle
Which statement correctly describes a square?
A square has 4 equal sides and 4 right angles
A square has 4 equal sides but no right angles
A square has 2 pairs of parallel sides only, and its sides are not all equal
A square has exactly 3 equal sides
Fluency Practice
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?
Yes
No
Not enough information
How many lines of symmetry does the square shown have in total?
How many lines of symmetry does the scalene triangle shown have?
How many lines of symmetry does the equilateral triangle shown have?
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.
How many lines of symmetry does the regular hexagon shown have?
You're viewing 2 of 6 sections.
Create a free account to continue the full exercise set and save your progress.
Create free account