@prefix concept: <https://w3id.org/kmath/concept/> .
@prefix course: <https://w3id.org/kmath/course/> .
@prefix curriculum_unit: <https://w3id.org/kmath/curriculum_unit/> .
@prefix math: <https://w3id.org/kmath/> .
@prefix problem_type: <https://w3id.org/kmath/problem_type/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix section_level: <https://w3id.org/kmath/section_level/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix textbook_section: <https://w3id.org/kmath/textbook_section/> .
@prefix textbook_source: <https://w3id.org/kmath/textbook_source/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

textbook_section:sibaljeom_workbook_algebra_theme22_triangle_area a math:TextbookSection ;
    rdfs:label "시발점 워크북 대수 Theme 22 삼각형의 넓이"@ko ;
    skos:definition "시발점 워크북 대수 Chapter 2. 삼각함수의 Theme 22 기본 문항(STEP 1)."@ko ;
    math:canonicalUnit curriculum_unit:algebra_sine_cosine_laws ;
    math:coversConcept concept:circular_sector,
        concept:cosine_law,
        concept:quadrilateral_area_by_diagonals,
        concept:triangle_area_by_sine ;
    math:coversProblemType problem_type:sine_cosine_law_combined,
        problem_type:triangle_area_trigonometry ;
    math:pageEnd 63 ;
    math:pageStart 62 ;
    math:parentSection textbook_section:sibaljeom_workbook_algebra_ch2_trigonometric_functions ;
    math:partOfCourse course:algebra ;
    math:sectionLevel section_level:lesson ;
    math:textbook textbook_source:sibaljeom_workbook_algebra .