Mathematics
High School (9–10)
General
Coordinate Geometry › The Cartesian PlaneCoordinate Geometry › Distance, Midpoint and Section FormulaeChapter 6Coordinate Geometry
How does a map tell you exactly where a place is? How does a game know where a character stands on the screen? In both cases, two numbers fix a position. In this chapter we learn how two number lines make a plane, how to name and plot any point on it, and then how to find the distance between two points, the midpoint of a line and the point that divides a line in a given ratio. We use Python to plot points and to check our calculations.
Part of Mathematics · High School (9–10) (chapter 6)
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The Cartesian Plane
A seat in a cinema is found by a row and a seat number. A square on a chessboard is found by a letter and a number. In this course we learn how two numbers fix the position of any point on a flat surface, and how to plot, read and reflect points.
Distance, Midpoint and Section Formulas
A ship at one point and a port at another: how far apart are they? Where is the point halfway between them? Here we find the distance between two points, the midpoint, the point that divides a line in a ratio, and we use them to study shapes.