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This is an index that clearly deals with different kinds of geometric shapes.

Compare NumberTropes, ShapesAndSymbolsTropes.
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!!Tropes
[[index]]
* TwoDSpace: Spacecraft fail to recognize a third axis of movement.
* AlienGeometries: Alien people, places, and objects that defy known geometry.
* BeehiveBarrier: Tessellating polygonal shields.
* BiggerOnTheInside: Something that is bigger on the inside than on the outside.
* {{Bizarrchitecture}}: Architecture that doesn't makes sense to walk or live in.
* CropCircles: Geometric patterns cut or burned into a field of plant life.
* CrossphaseViewport: A plot device that allows a character to see a separate location that either occupies the same space and time as another, or is very similar to the original.
* DepthDeception: Depth perception gone wrong
* EldritchLocation: A highly-bizarre structure or land, often with AlienGeometries.
* EvilIsAngular: Antagonists have sharp, rugged features.
* FearfulSymmetry: Fighting that leave opponents at a stalemate due to conducting physically identical actions against each other.
* ForcedPerspective: A 3D scene is set up to create optical illusions involving perspective.
* GeometricMagic: Geometric figures are utilized in the exercise of magic.
* HeavenlyConcentricCircles: {{Heaven}}ly planes or beings are depicted as concentric circles in the sky.
* HighTechHexagons: Hexagonal shapes incorporated into technological themes.
* LivingPolyhedron: A lifeform that is polygonal or polyhedral in shape.
* MagicSquarePuzzle: A square array of integers that sum the same in each row, column, and main diagonal.
* MoreThanThreeDimensions: Additional spatial dimensions beyond length, width, and height.
* MysticalCityPlanning: When a structure, city, or even a nation makes up a mystical glyph when viewed from overhead.
* PaperPeople: Beings whose bodies only exist on two axes of space.
* PerspectiveMagic: Manipulating things in 3D space as if they were actually a 2D scene.
* PortalNetwork: The shortest distance between points are made shorter due to travel through interconnected portals.
* SinisterGeometry: A foreign and likely dangerous object or being is additionally uncanny in appearance due to having an unassuming simple shape.
** OminousCube: A simple cube has more to it than how it seems.
* SpaceMaster: The power to manipulate geometry.
* WorldShapes: Variable shapes of a setting's world beyond that of the reasonable globe.
** FlatWorld: A world has little to no physical depth.
* VideoGame3DLeap: A VideoGame series that started out with 2D graphics and transitioned into 3D graphics with later installments.
[[/index]]
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