# GEDGeometry8128

- Author:
- Ronan Downes, A B Cron

**G**eneral

**E**ducational

**D**evelopment (GED) tests are a group of four subject tests which, when passed, certify that the test taker has American or Canadian high school-level academic skills. Here are some topics which can assist students in learning the mathematics covered on the GED/HiSET/TASC/GCSE

**G**eneral

**C**ertificate of

**S**econdary

**E**ducation. Book 1 is a compilation of basic skills needed for success, but not tested.

**Mostly PreGED Skills**Book 2 has many activities which are tested.

**Many GED Level Skills**

**GED Mathematics Book1**https://www.geogebra.org/m/j4UyPdKW

**GED Mathematics Book 2**https://www.geogebra.org/m/mEs37yMj

**GED Science**https://www.geogebra.org/m/kH5xMUpw

**GED Slope**https://www.geogebra.org/m/cvAySD7E Thanks, Tim B.

**Geometry Introduction**https://www.geogebra.org/m/dsGHMH8u

## Table of Contents

### Geometry

- Full Circle Protractors
- Intersecting Line Properties
- Parallel Line Theorems
- Triangle: Sum of Interior Angles
- Finding sums of angles
- Parallel & Perpendicular Linear Equations
- What class of Triangles use Pythagorean Theorem?
- Triangle Inequality
- Triangle Inequality
- Triangle: Sum of Remote Interior Angles & Exterior Angle
- Triangle: Proportionality
- Quadrilateral Tools
- Diagonal Hint for a Rectangular Prism
- Pythagorean Theorem (Converse)
- Polygon Proofs of Pythagoras
- All Poly Proof of Pythagoras
- Pythagorean Proof SemiCircle
- Three-Dimensional Pythagorean Theorem
- Triangle Centers
- TRUE MEANING of π
- Classify Triangles by Angle
- Supplementary Angles (Quick Exploration)
- Complementary Meaning?
- PolygonTypes
- Area of Regular Polygon
- Regular Pentagons (with Limits)