File:Harmonic quadrilateral.svg

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Summary

Description
English: Harmonic quadrilateral property 1
中文:调和四边形性质1
Date
Source Own work
Author Hbghlyj

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Captions

Tangents to the circumscribed circle at points A and C and the straight line BD either intersect at one point or are mutually parallel.

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15 March 2022

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Date/TimeThumbnailDimensionsUserComment
current09:03, 15 March 2022Thumbnail for version as of 09:03, 15 March 2022625 × 762 (15 KB)HbghlyjUploaded own work with UploadWizard
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