Lines of Symmetry for 4th Grade
A line of symmetry divides a shape so that folding along it matches the two halves exactly. Some shapes have none, some have several, and a circle has infinitely many. The examples below cover each case, with practice problems and a full answer key.
DETAILED EXPLANATION
A line of symmetry divides a shape so that one half is the mirror image of the other. A square has 4 lines of symmetry; a rectangle has 2.
WORKED EXAMPLES WITH STEP BY STEP SOLUTIONS
Example 1
How many lines of symmetry does a square have?
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Solutions:
Step 1: Apply the concept from the lesson above.
Step 2: Carry out the operation or reasoning.
Answer: A square has 4 lines of symmetry.
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