Grade 4 Math Practice Test: Line Symmetry and Classifying Shapes
- Line Symmetry and Classifying Shapes
- 10 questions
- 12 minutes
This test practices finding lines of symmetry and naming shapes by their angles and sides. Tip: a line of symmetry folds a shape into two halves that match exactly.
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Question 1
How many lines of symmetry does a square have?
Correct answer: C
A square can be folded in half up and down, side to side, and along both diagonals, so it has 4 lines of symmetry.
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Question 2
A rectangle has two long sides and two short sides. How many lines of symmetry does it have?
Correct answer: B
It folds evenly through the middle in two directions. Folding along a diagonal does not work because the halves do not match, so it has 2, not 4.
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Question 3
Which capital letter has a vertical line of symmetry?
Correct answer: A
A line down the middle of A splits it into two matching halves. F, J and R look different on the left and right sides.
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Question 4
A triangle has angles of 90°, 50° and 40°. What kind of triangle is it?
Correct answer: D
A triangle with one 90° angle is a right triangle. It is not acute, because an acute triangle has all three angles less than 90°.
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Question 5
Which triangle always has one angle that is greater than a right angle?
Correct answer: B
An obtuse angle is greater than 90°, and an obtuse triangle has one. A right triangle has a 90° angle, which is not greater than a right angle.
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Question 6
A quadrilateral has two pairs of parallel sides, and none of its angles are right angles. Which shape could it be?
Correct answer: D
A parallelogram has two pairs of parallel sides and does not need right angles. Rectangles and squares always have 4 right angles.
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Question 7
Which shape has exactly one pair of perpendicular sides?
Correct answer: C
The two sides that form the right angle in a right triangle are perpendicular. A square and a rectangle have 4 right angles, so they have more than one pair.
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Question 8
How many lines of symmetry does an equilateral triangle have?
Correct answer: A
Each line goes from a corner to the middle of the opposite side, and there are 3 corners, so there are 3 lines of symmetry.
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Question 9
A regular hexagon has 6 equal sides and 6 equal angles. How many lines of symmetry does it have?
Correct answer: C
There are 3 lines through opposite corners and 3 lines through the middles of opposite sides, so 6 in all.
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Question 10
Which shape has no line of symmetry?
Correct answer: A
A triangle with three different side lengths (a scalene triangle) cannot be folded into matching halves. A triangle with two equal sides has one line of symmetry.
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