Download these worksheets to sharpen your geometry skills. Sheets focus on angles, coordinate geometry, triangles, quadrilaterals, transformations, and three-dimensional geometry, and more.

Geometry is the study of how to use math to describe and investigate different points, lines and shapes. The way that a shape is described in geometry is with a formula, which is simply a mathematical way to calculate different...

Great lesson plans covering a wide-range of math-related subjects.

The geometry tutorial investigates word problems on squares with detailed solutions. Topics included are perimeter and area of a square.

AAA Math's interactive tutorials and lessons assist students grades K-8 improve their understanding of a wide range of arithmetic topics. Students are provided with immediate feedback as they complete the "Learn," "Practice," and "Play"...

On this site, there are several math problems to explore and solve. Look through some solutions by famous mathematicians and expand your thinking about some interesting math concepts. Teachers of elementary grades may want to use this...

Biography of Euclid, a Greek Mathematician, also known as the 'Father of Geometry'.

Provides examples and a video lesson that introduce fundamental statements of geometry.

Putt-Putt golf can be a great tool in helping students understand angles and their reflections. Here a teacher demonstrates the "Course," set up in his classroom to assist in explaining to students how to use geometry and angles in...

The folks at Pixar are widely known as some of the world's best storytellers and animators. They are perhaps less recognized as some of the most innovative math whizzes around. Pixar Research Lead Tony DeRose delves into the math behind...

How would you design the seating for an Olympic stadium to give spectators the best view of events? This geometry and modelling activity is designed to be accessible to both GCSE and A-level maths students (Key Stage 4 and Key Stage 5),...

There are a set of three lessons here that help students with the concepts of angles. Each of the lessons is a hands on approach to help students learn fundamentals angles and fundamental properties in geometry.

The students will be split into small, cooperative groups and build a city following specific guidelines. The students will learn how a city is constructed with angles, intersections, parallel, intersecting, and transversal streets. They...

One piece of Play-Doh can make many different shapes. Even though you can change the shape by squishing or stretching the Play-Doh, it is still the same size unless you add or take away some of the dough. Try this experiment to test how...

A complete reference guide to horizontal lines. It provides definitions, examples, and an interactive activity that enhances further explanation. Includes links to related topics.

Contains a detailed biography and discussion of the contributions of the ancient Greek philosopher Thales. Part of a larger mathematics site, this page focuses primarily on his contributions to Geometry.

NZMaths is a New Zealand teacher resource that provides lesson plans for students in algebra, geometry, measurement, numbers, statistics, logic and reasoning.

This New Zealand Problems website is an excellent resource for lesson plans in problem-solving. They are organized into the following categories: algebra, geometry, measurement, numbers, statistics, and logic and reasoning.

Teachers, this New Zealand Problem Solving website is an outstanding resource for lesson plans. They are organized into the following categories: algebra, geometry, measurement, numbers, statistics, and logic and reasoning.

Teachers, this New Zealand Problem Solving website is an outstanding resource for lesson plans. They are organized into the following categories: Algebra, Geometry, Measurement, Numbers, Statistics, and Logic and Reasoning.

Review geometry math vocabulary terms with this online game.

A java applet on this site illustrates the principles or spherical geometry.

This lesson offers an interesting, hands-on experience for middle school students studying cylinders. Students will create cylinders, and measure and compare their volumes.

Each term of Intermath's interactive math dictionary contains a description and links to related terms, everyday examples, interactive checkpoint, more information, and challenges located in the left-hand column of the page. This...