Planes of Symmetry Flashcards

All 4 cards in this deck

What is a plane of symmetry of a 3D solid?

A flat cut that divides the solid into two identical halves, each a mirror image of the other.

How many planes of symmetry does a cube have?

How many planes of symmetry does a cuboid whose edges are all different lengths have?

3, one halfway through each pair of opposite faces.

True or false? A square-based pyramid has 4 planes of symmetry.

True. Two through the midpoints of opposite base edges and two through the base diagonals.