Symmetry & Transformations
≈ 20 minA line of symmetry is a fold line that splits a shape into two halves that match exactly. A square has lines of symmetry; a rectangle that is not a square has .
A transformation moves a shape without changing its size:
- translation — a slide to a new position (no turning, no flipping);
- reflection — a flip over a line, producing a mirror image;
- rotation — a turn around a point.
Flipping a shape over a line to make a mirror image is called a…
Sliding a shape to a new position, without turning or flipping it, is a…
How many lines of symmetry does a square have?
How many lines of symmetry does a rectangle (that is not a square) have?