Edexcel IGCSE Maths 复习笔记 4.7.1 Intersecting Chord Theorem What are circle theorems? Circle theorems are angle (and distance) properties that arise when lines and shapes drawn within or connecte...
Edexcel IGCSE Maths 复习笔记 4.6.4 Circle Theorems - Alternate Segment What you need to know Alternate Segment Theorem The Alternate Segment Theorem states that the angle betwe...
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...
Non-Coding DNA The genome within eukaryotic cells contains many non-coding sections of DNA Non-coding DNA does not code for any amino acids Non-coding DNA can be found between genes, ...
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...
