Grade 5 · Math · Lesson 28

Symmetry & Transformations

Geometry is full of patterns and motion. A line of symmetry splits a shape into two halves that match exactly. A transformation moves a shape without changing its size or proportions. Together, symmetry and transformations describe how flat shapes look the same after they are folded, slid, flipped, or turned.

What this lesson teaches

1Identify lines of symmetry in two-dimensional shapes
2Distinguish shapes that have symmetry from shapes that do not
3Name the three basic transformations: translation, reflection, and rotation
4Match each everyday word (slide, flip, turn) to its math name

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