@prefix concept: <https://w3id.org/kmath/concept/> .
@prefix course: <https://w3id.org/kmath/course/> .
@prefix math: <https://w3id.org/kmath/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix review_status: <https://w3id.org/kmath/review_status/> .
@prefix scheme: <https://w3id.org/kmath/scheme/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix textbook_section: <https://w3id.org/kmath/textbook_section/> .

concept:isosceles_triangle_property a math:Concept ;
    rdfs:label "이등변삼각형의 성질"@ko ;
    skos:definition "이등변삼각형의 두 밑각의 크기는 같고, 꼭지각의 이등분선은 밑변을 수직이등분한다는 성질이다."@ko ;
    skos:editorialNote "2026-09-28 개념 모델 정비에서 2022 개정 교육과정 성취기준을 근거로 추가했다. 도메인 전문가 검토가 필요하다."@ko ;
    skos:inScheme scheme:concepts ;
    skos:prefLabel "properties of isosceles triangles"@en,
        "이등변삼각형의 성질"@ko ;
    skos:topConceptOf scheme:concepts ;
    math:introducedIn course:middle_math ;
    math:requires concept:triangle_congruence ;
    math:requiresTransitively concept:angle,
        concept:geometric_construction,
        concept:triangle_congruence ;
    math:reviewStatus review_status:needs_review ;
    math:sourceSection textbook_section:national_curriculum_2022_middle_geometry_measurement ;
    math:taughtIn course:middle_math .