<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31478543</termId><termName>equilateral arches</termName><termType>PT</termType><termNote><![CDATA[ Pointed arches in which a line from the springing point to the pointed center equals the span between the springing points. ]]></termNote><termCreatedDate>2026-03-30 21:08:51</termCreatedDate><relation><relationType>UF</relationType><termId>31478544</termId><termName>arches, equilateral</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31478545</termId><termName>equilateral arch</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31478546</termId><termName>equilateral pointed arches</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31472350</termId><termName>pointed arches</termName><termType>PT</termType></relation></term>  </Zthes>