{"ok":true,"q":"Heron's Formula","n":4,"results":[{"id":"class_09\/mathematics\/chapter_12_heron_s_formula","title":"Chapter 12 — Heron S Formula","class_num":9,"subject":"mathematics","subject_label":"Mathematics","summary":"This chapter introduces Heron's formula — a direct method to find the area of a triangle when the lengths of all three sides are known. Starting from basic ideas (semiperimeter and","topic":"Statement of Heron's Formula","anchor":"topic-3"},{"id":"class_09\/mathematics\/chapter_07_triangles","title":"Chapter 7 — Triangles","class_num":9,"subject":"mathematics","subject_label":"Mathematics","summary":"Chapter 'Triangles' (Class 9, NCERT) introduces triangles, their types and basic elements, and develops students' understanding of triangle congruence, key properties and inequalit","topic":"Areas of triangles","anchor":"topic-7"},{"id":"class_10\/mathematics\/chapter_11_constructions","title":"Chapter 11 — Constructions","class_num":10,"subject":"mathematics","subject_label":"Mathematics","summary":"Chapter: Constructions (Class 10 NCERT Mathematics) introduces classical compass-and-straightedge constructions that form the foundation of synthetic geometry. The chapter emphasiz","topic":"Triangle construction — SSS (three sides)","anchor":"topic-3"},{"id":"class_07\/mathematics\/chapter_10_practical_geometry","title":"Chapter 10 — Practical Geometry","class_num":7,"subject":"mathematics","subject_label":"Mathematics","summary":"Introduction: Practical Geometry (Class 7) introduces classical straightedge-and-compass constructions. The chapter trains students to make accurate geometric figures using basic i","topic":"Construction of Triangles — Basic Cases","anchor":"topic-5"}]}