Excircle

English

The three excircles (orange) and incircle (blue) of a triangle (bold black)

The excircle of a quadrilateral

Etymology

From Template:Prefix.

Pronunciation

• Template:Audio

Noun

1. Template:Lb An escribed circle; a circle outside a polygon (especially a triangle, but also sometimes a quadrilateral) that is tangent to each of the lines on which the sides of the polygon lie.
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Usage notes

Any given triangle has exactly three excircles. A quadrilateral that has an excircle is said to be Template:M (or sometimes Template:M).

Related terms

• Template:L / Template:L
• Template:L

Translations

• Finnish: Template:T, Template:T
• French: Template:T
• Japanese: Template:T+
• Korean: Template:T+
• Portuguese: Template:T
• Swedish: utvändig Template:T
• Vietnamese: Template:T
• Welsh: Template:T

See also

• Template:L