UPON is a New York-based art, design and publishing studio founded by Ivy Zheyu Chen.

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Inscribed Angle

Inscribed angle is the half the central angle. Those on the same arc of a chord are equal.

This zine is the 3-part proof for this theorem.

Risograph printed, folded
8 pages
13 x 9 cm

Collected by Metropolitan Museum Library, Yale University Library, etc.
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