The example uses coordinates, angles and areas to illustrate geometry concepts.
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Thinkquest
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This powerpoint demonstrates how to use a protractor to measure angles.
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Jefferson County Schools
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This gives step by step instructions on constructing a triangle given two angles and a segment includes JavaSketchpad for interaction.
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To construct a triangle when two angles and the included side are given.
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This gives step by step instructions on constructing a triangle given a two segments an included angle includes a JavaSketchpad for interaction.
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To construct a triangle when two sides and the included angle are given.
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Tangents, secants, their arcs and angles: theorems
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math warehouse
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This page gives a very easy formula for finding the interior angles of any polygon, and goes through the steps to understand why this formula works as well. An excellent, understandable site.
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Cool Math
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