# Geometry Basics

Learn how lines and shapes interact and the math used to describe them with the learning resources listed here. Find geometric proofs, problems, answers, figures, geometry theorems, and other geometry topics here, either as printable worksheets, practice tests, books, online math games, or more.

### 2nd Grade Math Worksheets: Geometry

2nd | Worksheet/PrintableOur grade 2 geometry worksheets focus on deepening students understanding of the properties two dimensional shapes, including the concepts of congruency, symmetry, area and perimeter. We also...

### AGS Geometry

7th - High School | ProductGo beyond the basics of Geometry and investigate the world of planes and solids. Chapter openers and colorful photos invite exploration of geometric solids, triangles, the Pythagorean Theorem,...

### Analytic Geometry

6th - 9th | Online classIn analytic geometry, also known as coordinate geometry, we think about geometric objects on the coordinate plane. For example, we can see that opposite sides of a parallelogram are parallel by by...

### Basic geometry

3rd - 7th | Online classLet’s draw points, lines, line segments, and rays. We’ll also think about perpendicular and parallel lines and identify these in two-dimensional figures. Common Core Standard: 4.G.A.1

### California Standards Test for Geometry

7th - High School | Online classSal does the 80 problems from the released questions from the California Standards Test for Geometry. Basic understanding of Algebra I necessary.

### Crafty Cut

5th - High School | iPhone/iPadCrafty Cut is a block slicing game that offers three creative game modes dealing with 2D and 3D geometry. This app can be downloaded for free, but the complete version requires purchase. There is...

### Curriki Geometry

9th - High School | Online resourceThis collection includes resources that are used throughout the six projects of Curriki Geometry. Curriki is grateful for the tremendous support of our sponsor, AT&T Foundation. Our TeamCurriki...

### DragonBox Elements

3rd - 5th | Android App, iPhone/iPad AppEmbark on a great learning adventure! Discover the fundamentals of geometry with your family! Watch your kids learn geometry in a matter of hours, without them even noticing they’re learning! (main...

### Free Geometry Worksheets

7th - High School | Worksheet/PrintableLarge selection of free printable Geometry worksheets.

### Geoboard

Kindergarten - 3rd | iPhone/iPadGeoboard is a tool for exploring a variety of mathematical topics introduced in the elementary and middle grades. Learners stretch bands around the pegs to form line segments and polygons and make...

### Geometry

6th - 9th | Online resourceIf you like playing with objects, or like drawing, then geometry is for you! Geometry can be divided into: Plane Geometry is about flat shapes like lines, circles and triangles … shapes that can be...

### Geometry

5th - High School | Online resourceFree, interactive video lessons on geometry! The mathematics of lines, shapes, and angles. Essential stuff for describing the world around you.

### Geometry

Kindergarten - 2nd | Online classLearn how different shapes have different numbers of corners, different side lengths, and so on. Use these properties to help you recognize shapes.

### Geometry

4th - High School | Online classRoughly 2400 years ago, Euclid of Alexandria wrote Elements which served as the world’s geometry textbook until recently. Studied by Abraham Lincoln in order to sharpen his mind and truly...

### Geometry

7th - 9th | Online classWelcome. I’d like to introduce you to Mr. Angle. Nice to meet you. So nice to meet you. This tutorial introduces us to angles. It includes how we measure them, how angles relate to each other and...

### Geometry

9th - High School | Book, Online classGeometry introduces students to mathematics as a deductive science. It shows how a few simple assumptions about points, lines, etc., can lead to a substantial body of geometric theorems and the...

### Geometry

3rd - 6th | Online classLet’s draw points, lines, line segments, and rays. We’ll also think about perpendicular and parallel lines and identify these in two-dimensional figures. Common Core Standard: 4.G.A.1

### Geometry

4th - 6th | Online classWe’re going to stick our toes into the proverbial waters of geometry! For those of you that are visual learners you’ll love this topic. We’ll examine all kinds of lines and shapes in the 1st, 2nd,...

### Geometry

5th - 7th | Online classLearn how to find the area, volume, and surface area of all sorts of geometric shapes. Also work with shapes on the coordinate plane.

### Geometry Aligned to CCSS-M Standards

9th - High School | Online resourceThis collection contains resources for a high school course in Geometry. The resources are organized by Common Core State Standards for Mathematics and reflect a ninth or tenth grade course. Both...

### Geometry and spatial reasoning

Pre-K - 9th | Online resourcePractice geometry and spatial reasoning skills on IXL, have fun, and win awards!

### Geometry Content Inventory

9th - High School | Online resourceVirtual Nerd’s patent-pending tutorial system provides in-context information, hints, and links to supporting tutorials, synchronized with videos, each 3 to 7 minutes long. In this non-linear...

### Geometry Course

High School | Online resourceGeometry covers points, lines, planes, angles, parallel lines, triangles, similarity, trigonometry, quadrilaterals, transformations, circles and area. The material is text and video lectures, but...

### Geometry DVD Instruction

9th - High School | DVDThis course is designed to help students improve their problem solving and deductive reasoning through the study the geometric points, lines, and shapes. It covers the practical subjects related to...

### Geometry Help

5th - 9th | Online resourceNeed some geometry help? We have more than thirty excellent geometry lessons here, broken up in general topics. Make sure to browse all of the topics to find what you need, or search by keyword.

### Geometry: Intro to Proofs

High School | Product, WindowsThis highly intensive course, designed by Stanford mathematicians, teaches students geometry through the lens of formal logic. Not only will students learn geometric properties, but they will also...

### Geometry Lesson Series

6th - High School | Online resourceStudents use the geometry lessons in this series to explore and learn essential geometric postulates, theorems, and formulas through video and text. Students will confirm their learning with...

### Geometry (online)

9th - High School | Online classThis online course gives students a comprehensive introduction to Euclidean geometry and the principles of logical reasoning. After an introduction to the GradPoint interface and the basic tools...

### Geometry Online Course

High School - College | Online classJoin Professor Mary Pyo’s Geometry online class for time-saving lessons that include clear explanations of difficult topics and step-by-step examples. Special emphasis is placed on geometric proofs...

### Geometry Online with Books (4th ed.)

8th - 9th | Book, DVD, Online classGeometry (4th ed.) provides an incremental approach to proofs in various formats and systematically promotes the review and retention of algebraic skills with an introduction to trigonometry. It...