| A | B |
|---|
| regular | a polygon that has all equal sides and angles |
| polygon | a closed figure with 3 or more line segments |
| congruent | figures that are the same size and shape |
| vertex | where 3 or more faces meet |
| edge | the line where 2 faces meet |
| face | the polygons that make up a solid |
| polyhedron | a solid figure made up of polygons |
| penta- | a prefix meaning 5 |
| octa- | a prefix meaning 8 |
| hexa- | a prefix meaning 6 |
| equilateral triangle | a triangle with congruent sides |
| square | a regular quadrilateral |
| cube | a Platonic Solid made up of squares |
| adjacent | if the faces of a solid share an edge |
| dodeca- | a prefix meaning 12 |
| tetra- | a prefix meaning 4 |
| icosa- | a prefix meaning 20 |
| platonic solid | a solid made up of congruent regular polygons |
| inscribed | when one figure is drawn inside another so that they touch |
| duals | when one platonic solid can be inscribed in the other |
