Examples for

Plane Geometry
Plane geometry refers to the subcategory of geometry that considers figures in a plane. Wolfram|Alpha can answer your questions about figures in a plane such as circles, angles, polygons, etc.

Plane Figures

Compute properties of a simple plane figure.

Compute properties of a plane figure:

Specify parameters for a figure:

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Angles

Compute the complement, supplement and reference angles in both degrees and radians.

Compute the complement of an angle:

Compute the supplement of an angle:

Do computations with complementary angles:

Compute a reference angle:

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Golden Ratio Formula

Compute side lengths of golden rectangles.

Determine golden ratio numbers and lengths:

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