# Proofs in geometry

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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

Activities for congruent triangle proofs in geometry

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

Unit 2: Reasoning & Proofs ~ Teaching Two-Column Proofs in High School Geometry

Teaching Proofs in Geometry – What I do. Offers a great step by step introduction to proofs. Slowly leads the students to writing their own proofs

Structuring Inquiry - Based Lessons in Secondary Math - Math Giraffe

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!

Proof in Geometry by A. I. Fetisov This single-volume compilation of two books explores the construction of geometric proofs. In addition to offering useful criteria for determining correctness, it presents examples of faulty proofs that illustrate common errors. High-school geometry is the sole prerequisite.Proof in Geometry, the first in this two-part compilation, discusses the construction of geometric proofs and presents criteria useful for determining whether a...

This lesson is used classify figures according to their characteristics and begin coordinate geometry proofs. The figures included in this lesson are parallelograms, special parallelograms, trapezoids, kites and different types of triangles.

Introducing Geometry Proofs - A New Approach - Math Giraffe