# Geometry

Contents

Geometric shapes are all around us. The world is built with them. In this series of tutorials and exercises you'll become familiar with Euclidean geometry and terms like segments, scale drawings, parts of a circle, area, volume, angles, and geometric figures.

A circle is at the foundation of geometry, and at the foundation of a circle is a special number called Pi. This number allows us to relate the radius, diameter, and circumference of a circle.

3 exercises

PracticeProblems that stretch your understanding of area and circumference of circles

2 exercises

PracticeLearn to find volume of rings, triangular prisms, and rectangular prisms inside of other rectangular prisms.

Learn three types of angle pairs: vertical angles, complementary angles, and supplementary angles.

4 exercises

PracticePractice finding missing angles in figures using your knowledge of vertical, supplementary, and complementary angles.

2 exercises

PracticeLet's practice making triangles and start thinking about when it's possible or impossible to make a triangle.

3 exercises

PracticeWhen we slice (cut through) a 3D shape, we make a 2D shape called a cross section. In this tutorial, we think about the different cross sections we can make by slicing 3D shapes.

1 exercise

PracticeA map depicts objects much smaller than they are in real life. A map is a great example of a scale drawing. In this tutorial, we'll take a mathematical look at the nature of scale drawings.

2 exercises

Practice