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Chapter 1. Geometry

• 1.1 Lines and Angles

• 1.2 Polygons

• 1.3 Triangles

• 1.5 Circles

• 1.6 Perimeter and Area of Planar Two-Dimensional Shapes

• 1.7 Volume and Surface Area of Three-Dimensional Objects

• 1.8 Vectors

Lines and Angles

• Different lines and angles have specific names according to their environment, position, size, measurement, etc. This section provides some common definitions for lines and angles.

• The shortest distance between two points is a straight line. The distance between points (x1, y1) and (x2, y2) is given by:

The coordinates of the midpoint between the two points are:

• (x1 + x2)/2 and (y1 + y2)/2

• A

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