Chapter 1: Discovering Geometry

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Some links are repeated for use with more than one lesson.

1.1 Basic Geometric Figures

http://www.mathleague.com/help/geometry/polygons.htm
This site lists the basic geometric figures, defines them, and shows examples.

http://www.wisc-online.com/objects/index_tj.asp?objID=ABM301
This site explains the basic 2D figures and has a matching game at the end of the presentation.

1.2  Measuring Line Segments

http://www.freemathhelp.com/length-line-segment.html
This page explains how to find the length of a line segment by explaining examples.

1.3  Angles

http://www.mathleague.com/help/geometry/angles.htm
This page explains angles and basic angle terms and includes pictures.

http://www.innovationslearning.co.uk/subjects/maths/activities/year6/angles/game.asp
This site contains a game where students estimate an angle’s degree.

1.4  Constructions

http://www.cut-the-knot.org/do_you_know/compass.shtml
This site has instructions for constructions using only a compass.

http://www.regentsprep.org/Regents/Math/math-topic.cfm?TopicCode=construc
This site contains lessons on basic constructions with practice problems.

1.5  Perpendicular and Parallel Lines

http://www.terragon.com/tkobrien/algebra/topics/perpendicularlines/perpendicularlines.html
This page contains notes on perpendicular lines and has a coordinate grid to display the lines.

http://www.terragon.com/tkobrien/algebra/topics/parallellines/parallellines.html
This page contains notes on parallel lines and has a coordinate grid to display the lines.