INTRODUCTION

Excerpts

• INTRODUCTION

  the straight edge in every part will touch the surface, the faces are called **plane surfaces**, or **planes**.

• INTRODUCTION

  *A surface has only two dimensions, length and breadth.*

• INTRODUCTION

  *A point has no dimension, but denotes position simply.*

• INTRODUCTION

  It must be distinctly understood at the outset that the points, lines, surfaces, and solids of Geometry are *purely ideal*, though they are represented to the eye in a material way.

• INTRODUCTION

  If a surface moves in space, it generates, in general, a solid.

• INTRODUCTION

  Thus, Every horse is a quadruped is true, but the converse, Every quadruped is a horse, is not true.

Equations

Problems

No exercises in this chapter.