- CCSS High School: Geometry (Congruence) Volume 1
- HSG.CO.A.1: Geometry vocabulary explorations
- HSG.CO.A.2 - A.5: Experimenting with transformations in the plane
- HSG.CO.B.6 - B.8: Understanding congruence in terms of rigid motions
- Links to Other CCSS High School: Geometry Standards
- Additional - Links to CCSS High School: Functions Resources

# CCSS High School: Geometry (Congruence) Volume 1

- Author:
- Tim Brzezinski

- Topic:
- Angles, Congruence, Geometry, Volume

**This GeoGebra Book contains lots of discovery-based learning activities, investigations, and meaningful remediation worksheets that were designed to help enhance students' learning of geometry concepts both inside and outside of the mathematics classroom. This GeoGebra Book also contains contributions from the following individuals: Jennifer Silverman (https://www.geogebra.org/jennifer+silverman) Steve Phelps (https://www.geogebra.org/stevephelps) Dr. Ted Coe (https://www.geogebra.org/tedcoe) Without their amazing talent and creativity, this resource would not have been possible.**

## Table of Contents

### HSG.CO.A.1: Geometry vocabulary explorations

- Congruent Segments (Quick Exploration)
- Animation 18
- Proving Segments Congruent (Exercise)
- Congruent Angles: Definition
- Animation 36
- Proving Angles Congruent (1)
- Proving Angles Congruent (2)
- Proving Angles Congruent
- Midpoint Definition
- Animation 56
- Segment Bisector Definition
- Animation 160
- Perpendicular Lines - Quick Intro
- Segment Bisectors (Definitions)
- Perpendicular Bisector Definition
- Perpendicular Bisector Definition
- Animation 15
- Angle Bisector Definition (I)
- Complementary Angles (Quick Exploration)
- Animation 48
- Supplementary Angles (Quick Exploration)
- Animation 19
- Circle vs. Sphere
- Triangle Altitude Illustrator and Definition Writing Prompt
- Animation 162
- Triangle Median Illustrator & Definition Writing Prompt
- Animation 161
- Equilateral Action!!!
- Animation 165
- Equiangular Action!!!
- Animation 166
- Regular Polygon Action!
- Animation 193

### HSG.CO.A.2 - A.5: Experimenting with transformations in the plane

- Translations and Rotations
- Translating Triangle by a Vector
- Translating by Vector: Ex. 16
- Reflections
- Reflections Introduction
- Reflecting About Lines: Ex. 18
- Flip Flop Reflection
- Footprints in the Sand
- Tool for compositions of rigid transformations and dilations
- Applet for Multiple Transformations
- Messing With Lisa
- Rotations: Introduction
- Rotating Around Points: Ex. 17
- Point Symmetry: Another Perspective
- Reflections and Translations
- Tessellation by Translation
- Parallel Translation
- Transformations: Exercise 1
- Transformations: Exercise 2
- Transformations: Exercise 3
- Composing Transformations: Ex. 20

### HSG.CO.B.6 - B.8: Understanding congruence in terms of rigid motions

- Are the triangles congruent (part 2)?
- Are the triangles congruent (part 3)?
- Congruent Figures: Dynamic Illustration
- Animation 242
- Proving Tri's Congruent (I)
- Proving Tri's Congruent (II)
- SAS - Exercise 1A
- SAS - Exercise 1B
- SAS - Exercise 2
- SAS - Exercise 3
- SSS: Exercise 1
- SSS: Exercise 2
- SSS: Exercise 3
- SAS: Dynamic Proof!
- Animation 136
- SSS: Dynamic Proof!
- SSS: Dynamically Illustrated
- Animation 138
- ASA Theorem?
- Animation 137
- ASA: Exercise
- SSA Theorem?
- Ambiguous Case (SSA) Illustrator: All Cases
- Is "SSA" Legit? What Do You Think?
- Exploring SSA
- HL Action!
- Animation 225

### Links to Other CCSS High School: Geometry Standards

### Additional - Links to CCSS High School: Functions Resources