# Proofs In Geometry

One of the hardest topics to teach in Geometry has to be congruent triangle proofs. Identifying properties and theorems in order to develop and reason thr

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In this activity students will cut strips of paper and assemble them into two-column proofs. The first two proofs are algebraic proofs, the third proof uses the segment addition postulate, and the fourth proof uses the definition of congruence. A "Hints Sheet" is included for struggling students.

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Mrs. Newell's Math: Free Google Parallel and Perpendicular Lines Proofs Digital Activity

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This 21 page High School Geometry Theorems Postulates & Corollaries List would be perfect to help my math students understand all the difficult Geometry concepts! There are over 120 different Theorems in here! Its so thorough. I love how the Theorems all have a diagram and explanation next to them to help put them in "student words". This would be especially helpful when we learn proofs and all those pesky circle theorems. Love Love Love!

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High School Geometry blog post - Adding a step to my sequence of lessons for introducing geometry proofs made a huge difference!! Free downloads for your classroom

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sequence for introducing two-column proofs in High School Geometry - properties & postulates, etc. (blog post with free downloads) www.mathgiraffe.com

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