Cambridge Maths Academy

수학 모음 (Maths collection) 전체보기 1. Area of a regular octagon Question. Find the area of a regular octagon with side length $a$. (4-9 Higher GCSE by Michael White, Ch13 Geometry 4, p.426 Q19.) We consider the area of the triangle with an angle $\theta$ subtended at the centre. $$ \begin{align} \theta=\frac{360}{8}=45^\circ \end{align} $$ The height $h$ of the triangle is given by $$ \begin{align} \..

Pure mathematics Year 1 Table of contents Introduction Tangent properties Chord properties Edexcel P1 Ch6 Exercise 6E 1. Introduction We can use the properties of tangents and chords within circles to solve geometric problems. 2. Tangent properties A tangent to a circle is a straight line that intersects the circle at only one point. A tangent to a circle is perpendicular to the radius of the ci..

Pure mathematics Year 1 Here's a short introduction to Pure maths 1 Chapter 6 Circles. 6.1 Midpoints and perpendicular bisectors: Find the mid-point of a line segment and the equation of the perpendicular bisector to a line segment. 6.2 Equation of a circle: Learn how to find the equation of a circle. 6.3 Intersections of straight lines and circles: Solve geometric problems involving straight li..