Identify & Count Lines of Symmetry (CCSS 4.G.A.3 / Grade 3)
• A Line of Symmetry cuts a shape into two identical mirror-image halves.
• Imagine folding the shape along the line—if both halves match up perfectly, it is a line of symmetry!
• Some shapes have 0 symmetry lines, some have 1, and regular shapes (like squares) have multiple!