Clive W. Humphris

**GEOMETRY: Bisecting a Line at Right Angles. **

Each of these topics shows how its possible to accurately draw lines and angles using nothing more than a straight edge and a pair of compasses.

Beginning with bisecting a line i.e. to find the centre of the line from two distant points here labelled A and B.

Note that this process finds the centre between points A and B, but also produces two lines at exactly 90° to one another.

- Table of Contents
- Interactive eTextbooks
- Number Systems
- Number Conversion
- Number Types
- Compound Measures
- Roots
- Angles and Parallels
- Triangle Ratios
- Triangle Angles
- Percentages
- Ratios
- Fractions
- Vectors
- Geometry
- Circle Angles
- Area
- Surface Area and Symmetry
- Volume
- Laws
- Algebra 0
- Algebra 1
- Algebra 2
- Mathematical Rules
- Powers and Indices
- Simplifying
- Linear Equations
- Graphing
- Slope and Translation
- Curves and Angle Conversion
- Personal Finance
- Data Analysis
- Binary Numbers
- Binary Arithmetic