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Edexcel IGCSE Maths 复习笔记 4.6.3 Circle Theorems - Cyclic Quadrilaterals More advanced circle theorems 1. Opposite angles in a cyclic quadrilateral add up to 180° Double-check is that all ...
Edexcel IGCSE Maths 复习笔记 4.6.2 Circle Theorems - Tangents What do I need to know about tangents 1. A radius and a tangent are perpendicular Note that perpendicular lines meet at right angles &n...
Edexcel IGCSE Maths 复习笔记 4.6.1 Circle Theorems - Angles at Centre & Circumference What are circle theorems? You will have learned a lot of angle facts for your GCSE – angles in polygons, an...
Edexcel IGCSE Maths 复习笔记 4.5.1 Loci & Construction What are loci and constructions? A locus (loci is plural) is a line/shape/path that is determined by following a rule – eg. always being 2...
Edexcel IGCSE Maths 复习笔记 4.4.2 Speed, Density & Pressure - Harder What are speed, density and pressure? Speed, density and pressure are compound measures – they are made from other measures...
Edexcel IGCSE Maths 复习笔记 4.4.1 Speed, Density & Pressure What connects speed, density & pressure? Speed, density and pressure are all examples of variables which are calculated by divid...
Edexcel IGCSE Maths 复习笔记 4.3.1 Bearings & Scale What are bearings? Bearings (sometimes referred to as three-figure bearings) are a way of describing and using angles The way they are define...
Edexcel IGCSE Maths 复习笔记 4.2.1 Angles in Polygons What is a polygon? A polygon is a flat (plane) shape with n straight sidesFor example: A triangle is a polygon with 3 sidesA quadrilateral poly...
Edexcel IGCSE Maths 复习笔记 4.1.1 Angles in Parallel Lines What are parallel lines? Parallel lines are lines that are always equidistant (ie the same distance apart) – no matter how far the lines ...
