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Edexcel IGCSE Maths 复习笔记 5.1.3 Vectors - Proving Things What are vector proofs? In vector proofs we use vectors, along with a few key ideas, to prove that things are true in geometrical diagram...
Edexcel IGCSE Maths 复习笔记 5.1.2 Vectors - Finding Paths Finding paths in vector diagrams It is important to be able to describe vectors by following paths through a geometric diagram The followi...
Edexcel IGCSE Maths 复习笔记 5.1.1 Vectors - Basics What are vectors? A vector is a type of number that has both a size and a direction At GCSE we only deal with two-dimensional vectors, although i...
Edexcel IGCSE Maths 复习笔记 4.18.1 Similarity - Areas & Volumes What are similar shapes? See Similarity – Lengths and know that: Equivalent areas are linked by an area factor (see below) Equiv...
Edexcel IGCSE Maths 复习笔记 4.17.1 Similarity - Lengths What are similar shapes? Two shapes are mathematically similar if one is an enlargement of the other Equivalent angles in the two shapes wil...
Edexcel IGCSE Maths 复习笔记 4.15.1 3D Shapes - Surface Area What is surface area? A face is one of the flat or curved surfaces that make up a 3D shape The surface area of a 3D shape is the sum of ...
Edexcel IGCSE Maths 复习笔记 4.14.1 Problem Solving with Areas What is problem solving? Problem solving, as far as GCSE Mathematics is concerned, usually has two key features: A question is given a...
Edexcel IGCSE Maths 复习笔记 4.13.1 Circles - Sector Areas & Arc Lengths What is a sector? What is an arc? A maths book will (correctly) tell you that an arc is part of the circumference of a c...
Edexcel IGCSE Maths 复习笔记 4.12.1 Circles - Area & Circumference Why are circles different to other 2D shapes? Circles just have their own language! The circumference of a circle is its perim...
