4. Geometry and Trigonometry

Covers lines, angles, triangles, right triangles with trigonometric ratios, circles, and their properties including area, perimeter, and volume calculations.

重要度: ⭐⭐⭐

本单元包含的章节

• 4.1 Lines and Angles — Understanding properties of lines, angles, angle relationships, and parallel lines with transversals.
• 4.2 Triangles and Their Properties — Exploring triangle classifications, angle sum properties, congruence, similarity, and special triangles.
• 4.3 Right Triangles and Trigonometric Ratios — Mastering Pythagorean theorem, sine, cosine, tangent ratios, and solving right triangles.
• 4.4 Circles and Circular Properties — Understanding circle geometry including radius, diameter, chords, arcs, inscribed angles, and tangent lines.
• 4.5 Area and Perimeter Calculations — Computing areas and perimeters of polygons, circles, and composite figures using appropriate formulas.
• 4.6 Volume and Surface Area — Calculating volumes and surface areas of three-dimensional solids including prisms, cylinders, pyramids, cones, and spheres.