Geometry

Properties of shapes, area & volume, triangles

📝 Lessons (레슨 목록)

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3.1 Basic Geometric Concepts (기본 기하 개념)
🏷️ points, lines, planes, angles, parallel lines, perpendicular lines, complementary angles, supplementary angles
admin 👁️ 0 - 2025-11-25 14:16:18
3.2 Angles and Triangles (각과 삼각형)
🏷️ triangles, triangle classification, interior angles, exterior angles, Pythagorean theorem, right triangles
admin 👁️ 0 - 2025-11-25 14:16:18
3.3 Quadrilaterals and Polygons (사각형과 다각형)
🏷️ polygons, quadrilaterals, parallelogram, rectangle, square, rhombus, trapezoid, regular polygons
admin 👁️ 0 - 2025-11-25 14:16:18
3.4 Circles and Their Properties (원과 원의 성질)
🏷️ circles, radius, diameter, circumference, arc, chord, tangent, sector, pi
admin 👁️ 0 - 2025-11-25 14:16:18
3.5 Perimeter and Area (둘레와 넓이)
🏷️ perimeter, area, rectangle, triangle, circle, composite shapes, unit conversion
admin 👁️ 0 - 2025-11-25 14:16:18
3.6 Surface Area (겉넓이)
🏷️ surface area, 3D shapes, prisms, pyramids, cylinders, cones, spheres, nets
admin 👁️ 0 - 2025-11-25 14:16:18
3.7 Volume of 3D Shapes (입체도형의 부피)
🏷️ volume, capacity, prisms, pyramids, cylinders, cones, spheres, cubic units
admin 👁️ 0 - 2025-11-25 14:16:18
3.8 Geometric Transformations (기하 변환)
🏷️ transformations, translation, reflection, rotation, dilation, congruence, similarity
admin 👁️ 0 - 2025-11-25 14:16:18