# 3 Dimensional Solids Terms-Mrs. Mele Geometry Honors

### 15 terms by erubes358

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http://quizlet.com/12226146/surface-area-and-volume-formulas-of-3d-solids-flash-cards/ for formulas

### Prism

Has 2 bases that must be congruent or parallel, 1 height which is the distance from base to base, named according to shape of bases, faces are rectangles.

### Cylinder

A special prism with 2 circular bases.

### Pyramid

Has 1 base, 2 heights (slant height- l; and height of solid-h), named according to shape of base.

### Cone

A circular based pyramid.

### Nets

An unfolded, two-dimensional pattern of a 3D solid.

### Platonic Solid

A 3D solid where every face is congruent.

### Tetrahedron

A platonic solid consisting of 4 congruent triangular sides.

### Cube

A platonic solid consisting of 6 congruent square sides.

### Octahedron

A platonic solid with 8 congruent triangles.

### Dodecahedron

A platonic solid with 12 congruent pentagonal sides.

### Isohedron

A platonic solid with 20 congruent triangular sides.

### Lateral Area

Sum of area of the entire solid except for the base(s).

### Total Surface Area

Sum of the area of all of the faces.

SA: units²
Volume: units³

The Great Circle

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