<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31402753</termId><termName>octagons</termName><termType>PT</termType><termNote><![CDATA[ Polygons having eight sides and eight angles. ]]></termNote><termCreatedDate>2026-03-30 20:48:18</termCreatedDate><relation><relationType>UF</relationType><termId>31402754</termId><termName>octagon</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31361605</termId><termName>polygons</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31362892</termId><termName>octagonal</termName><termType>PT</termType></relation></term>  </Zthes>