<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31333714</termId><termName>convex</termName><termType>PT</termType><termNote><![CDATA[ Of a plane figure or a solid, a set of points containing all points in a line joining any two constituent points, for example, the rounded outward exterior curve of a circle or sphere. In a convex polygon, every internal angle is less than or equal to 180 degrees. ]]></termNote><termCreatedDate>2026-03-30 20:29:55</termCreatedDate><relation><relationType>BT</relationType><termId>31311816</termId><termName>curved</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31333713</termId><termName>concave</termName><termType>PT</termType></relation></term>  </Zthes>