# Category:Solid Geometry

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This category contains results about **Solid Geometry**.

Definitions specific to this category can be found in Definitions/Solid Geometry.

**Solid geometry** is the study of geometric figures in three dimensions.

As such it is a misnomer, because the figures themselves under study are strictly speaking the surfaces of such figures.

## Subcategories

This category has the following 42 subcategories, out of 42 total.

### A

- Antipodal Points (empty)

### C

- Cross-Sections (empty)
- Cylindrical Coordinates (2 P)

### D

- Direction Angles (empty)
- Direction Ratios (empty)
- Doubling the Cube (12 P)

### E

### F

- Faces of Solid Figures (empty)
- Fedorov Groups (2 P)
- Frustums (2 P)

### G

- Generatrices (empty)

### P

- Planes (2 P)

### R

- Right-Hand Rule (empty)

### S

- Skew Lines (empty)

### T

- Tangent Planes (empty)
- Three-Dimensional Figures (empty)

### V

## Pages in category "Solid Geometry"

The following 41 pages are in this category, out of 41 total.

### C

- Cavalieri's Principle
- Cavalieri's Principle/Extension
- Common Section of Planes Perpendicular to other Plane is Perpendicular to that Plane
- Common Section of Two Planes is Straight Line
- Common Sections of Parallel Planes with other Plane are Parallel
- Condition for Equal Angles contained by Elevated Straight Lines from Plane Angles
- Condition for Equal Angles contained by Elevated Straight Lines from Plane Angles/Porism
- Construction of Straight Line Perpendicular to Plane from point not on Plane
- Construction of Straight Line Perpendicular to Plane from point on Plane
- Cuboid with Integer Edges and Face Diagonals