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This lesson offers help to students who will eventually write mathematical proofs. The material allows students to put together statements and reasons to build a formal proof. The lesson involves identifying the...
This geometry lesson introduces the Power of Points theorem. While it is often taught in three parts (the ChordChord Power theorem, the SecantSecant Power theorem, and the Tangentsecant Power theorem), this lesson...
This math unit from Illuminations asks students to inscribe and circumscribe regular polygons. They will then analyze the area of the polygons, using either an applet or a graphing calculator. The unit includes two...
This collection, created by Salman Khan of the Khan Academy, features videos on geometry. A basic understanding of Algebra I necessary to understand the fundamental elements featured in this collection. Altogether, the...
This interdisciplinary math lesson from Illuminations may be used in conjunction with geography education. Students will consider strategies for figuring out the distance to the horizon from various heights. A formula...

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